
General
Encyclopedia
|
Containing nearly 51,000 entries (marshalling six and one-half million
words on a vast range of topics), and with more than 80,000 hypertext
cross-references, |
| CONTENTS |
- Alphabetic Index of Entries
- This
browsable alphabetic index comprises over 51,000 entries.
|
|
|
- Index to Biographical Entries
- A listing of
entries grouped by hundreds of separate categories.
List of online encyclopedias
Advanced
Searching Techniques
Advanced Searching Techniques
Web
Search Tutorial - 11 Advanced Searching Tips
Most
of the time, you'll find exactly what you're looking for with just a
basic query (the word or phrase you search for). However, the following
tips can help you make the most of your searches. Throughout the
article, we'll use square brackets [ ] to signal a search query, so [
black and white ] is one query, while [ black ] and [ white ] are two
separate queries.
Voice Search is available on Google.com using Google Chrome. Learn more
about Voice Search.
Some basic facts
•Every word matters. Generally, all the words you put in the
query will be used.
•Search is always case insensitive. A search for [ new york
times ] is the same as a search for [ New York Times ].
•Generally, punctuation is ignored, including
@#$%^&*()=+[]\ and other special characters.
To make sure that your Google searches return the most relevant
results, there are some exceptions to the rules above.
Tips for better searches
•Keep it simple. If you're looking for a particular company,
just enter its name, or as much of its name as you can recall. If
you're looking for a particular concept, place, or product, start with
its name. If you're looking for a pizza restaurant, just enter pizza
and the name of your town or your zip code. Most queries do not require
advanced operators or unusual syntax. Simple is good.
•Think how the page you are looking for will be written. A
search engine is not a human, it is a program that matches the words
you give to pages on the web. Use the words that are most likely to
appear on the page. For example, instead of saying [ my head hurts ],
say [ headache ], because that's the term a medical page will use. The
query [ in what country are bats considered an omen of good luck? ] is
very clear to a person, but the document that gives the answer may not
have those words. Instead, use the query [ bats are considered good
luck in ] or even just [ bats good luck ], because that is probably
what the right page will say.
•Describe what you need with as few terms as possible. The
goal of each word in a query is to focus it further. Since all words
are used, each additional word limits the results. If you limit too
much, you will miss a lot of useful information. The main advantage to
starting with fewer keywords is that, if you don't get what you need,
the results will likely give you a good indication of what additional
words are needed to refine your results on the next search. For
example, [ weather cancun ] is a simple way to find the weather and it
is likely to give better results than the longer [ weather report for
cancun mexico ].
•Choose descriptive words. The more unique the word is the
more likely you are to get relevant results. Words that are not very
descriptive, like 'document,' 'website,' 'company,' or 'info,' are
usually not needed. Keep in mind, however, that even if the word has
the correct meaning but it is not the one most people use, it may not
match the pages you need. For example, [ celebrity ringtones ] is more
descriptive and specific than [ celebrity sounds ].
As always, we use square brackets [ ] to denote queries, so [ to be or
not to be ] is an example of a query; [ to be ] or [ not to be ] are
two examples of queries.
•Phrase search ("")
By putting double quotes around a set of words, you are telling Google
to consider the exact words in that exact order without any change.
Google already uses the order and the fact that the words are together
as a very strong signal and will stray from it only for a good reason,
so quotes are usually unnecessary. By insisting on phrase search you
might be missing good results accidentally. For example, a search for [
"Alexander Bell" ] (with quotes) will miss the pages that refer to
Alexander G. Bell.
•Search within a specific website (site:)
Google allows you to specify that your search results must come from a
given website. For example, the query [ iraq site:nytimes.com ] will
return pages about Iraq but only from nytimes.com. The simpler queries
[ iraq nytimes.com ] or [ iraq New York Times ] will usually be just as
good, though they might return results from other sites that mention
the New York Times. You can also specify a whole class of sites, for
example [ iraq site:.gov ] will return results only from a .gov domain
and [ iraq site:.iq ] will return results only from Iraqi sites.
•Terms you want to exclude (-)
Attaching a minus sign immediately before a word indicates that you do
not want pages that contain this word to appear in your results. The
minus sign should appear immediately before the word and should be
preceded with a space. For example, in the query [ anti-virus software
], the minus sign is used as a hyphen and will not be interpreted as an
exclusion symbol; whereas the query [ anti-virus -software ] will
search for the words 'anti-virus' but exclude references to software.
You can exclude as many words as you want by using the - sign in front
of all of them, for example [ jaguar -cars -football -os ]. The - sign
can be used to exclude more than just words. For example, place a
hyphen before the 'site:' operator (without a space) to exclude a
specific site from your search results.
•Fill in the blanks (*)
The *, or wildcard, is a little-known feature that can be very
powerful. If you include * within a query, it tells Google to try to
treat the star as a placeholder for any unknown term(s) and then find
the best matches. For example, the search [ Google * ] will give you
results about many of Google's products (go to next page and next page
-- we have many products). The query [ Obama voted * on the * bill ]
will give you stories about different votes on different bills. Note
that the * operator works only on whole words, not parts of words.
•Search exactly as is (+)
Google employs synonyms automatically, so that it finds pages that
mention, for example, childcare for the query [ child care ] (with a
space), or California history for the query [ ca history ]. But
sometimes Google helps out a little too much and gives you a synonym
when you don't really want it. By attaching a + immediately before a
word (remember, don't add a space after the +), you are telling Google
to match that word precisely as you typed it. Putting double quotes
around a single word will do the same thing.
•The OR operator
Google's default behavior is to consider all the words in a search. If
you want to specifically allow either one of several words, you can use
the OR operator (note that you have to type 'OR' in ALL CAPS). For
example, [ San Francisco Giants 2004 OR 2005 ] will give you results
about either one of these years, whereas [ San Francisco Giants 2004
2005 ] (without the OR) will show pages that include both years on the
same page. The symbol | can be substituted for OR. (The AND operator,
by the way, is the default, so it is not needed.)
Learn about a few special search features to help you find exactly what
you're looking for as quickly as possible.
Exceptions
Search is rarely absolute. Search engines use a variety of techniques
to imitate how people think and to approximate their behavior. As a
result, most rules have exceptions. For example, the query [ for better
or for worse ] will not be interpreted by Google as an OR query, but as
a phrase that matches a (very popular) comic strip. Google will show
calculator results for the query [ 34 * 87 ] rather than use the 'Fill
in the blanks' operator. Both cases follow the obvious intent of the
query. Here is a list of exceptions to some of the rules and guidelines
that were mentioned in this and the Basic Search Help article:
Exceptions to 'Every word matters'
•Words that are commonly used, like 'the,' 'a,' and 'for,' are
usually ignored (these are called stop words). But there are even
exceptions to this exception. The search [ the who ] likely refers to
the band; the query [ who ] probably refers to the World Health
Organization -- Google will not ignore the word 'the' in the first
query.
•Synonyms might replace some words in your original query.
(Adding + before a word disables synonyms.)
•A particular word might not appear on a page in your results
if there is sufficient other evidence that the page is relevant. The
evidence might come from language analysis that Google has done or many
other sources. For example, the query [ overhead view of the bellagio
pool ] will give you nice overhead pictures from pages that do not
include the word 'overhead.'
Punctuation that is not ignored
•Punctuation in popular terms that have particular meanings,
like [ C++ ] or [ C# ] (both are names of programming languages), are
not ignored.
•The dollar sign ($) is used to indicate prices. [ nikon 400 ]
and [ nikon $400 ] will give different results.
•The hyphen - is sometimes used as a signal that the two words
around it are very strongly connected. (Unless there is no space after
the - and a space before it, in which case it is a negative sign.)
•The underscore symbol _ is not ignored when it connects two
words, e.g. [ quick_sort ].
If you want to filter
and
customize the search results you see, use the options along the side of
the results page. For example, you can choose to just see blogs updated
within the last 24 hours or photos of a certain size.
How to use
search options and tools
- On the
side of your search results page, click a filtering option to customize
the search results page you're looking at.
We'll
automatically show you the tools and filtering options that are
most relevant to your search.
To see more, click More
and More search tools
to see all the available filters and views you can apply to that
search. Since your options will vary based on the search and the
filters you've already used, you won't see all the options all the time.
- Try
clicking on two or more options to form a more complex, more focused
filter.
- To go back
to standard unfiltered Google results, click Reset
tools at the bottom of the
panel.
Filter
results by type of content
The top group of options will filter results by the type of web content
you'll see.
- Everything: By default, your
Google search will show unfiltered results that can include
all the types of content below.
- Images:
See only results from Google Images.
- News:
See only results from
Google
News.
- Books:
See only results from
Google Books including reviews,
excerpts, and where you can buy the book.
- Videos:
See only video results using Google's
Video Search.
- Blogs:
See only results from
Google Blog Search.
- Places: See only results from
Google Place Pages.
- Shopping:
See only results from
Google Product Search.
(With this option, you'll see results within the Product
Search site rather than in a Google search results page.)
- Discussions: See what people
are saying in discussion groups, forums, and
question-and-answer sites.
- Recipes:
See only results for recipes. Customize and filter these results to
show recipes with your ideal ingredients, cook time and calorie count.
This feature is currently not available in all languages.
Learn more about Recipe View
You won't
always see all of these options, so click More
below your list to see all the available types for that particular
search.
Customize
your results by location
The location used to customize your results is clearly indicated on the
left side of your results page. Our location detection technology will
automatically set a location for you, but you can
easily specify an alternate location.
Filter
results by other criteria
Based on your search and the Google property you've selected, you'll
see a customized list of filtering tools. We'll automatically show you
the tools that seem most relevant to your search, so you won't always
see all of these tools. Here are a few tools that you might see:
Publish date
Limit results according to when they were published on the Web. Google
tries to estimate the publication date for a page by using information
such as the date when Google first indexed the page.
See the options
- Any
time: By default, your
search results will not be filtered by date.
- Latest:
Sometimes the top results that show up are a little dated, although
they're still relevant. The Latest
option shows you results that are both relevant
and fresh. Google automatically
optimizes the time period used for your filter to make sure that the
most relevant and recent results are included. (This option is only
available when Everything
is selected in the first group of options.)
- Past
24 hours / Past week / Past month / Past year:
Use these pre-defined ranges of times to find webpages. For instance,
the Past 24 hours
option will help you find information about current events.
- Custom
range: This option lets you
define your own date range. Enter the dates you want to use in the
format mm/dd/yyyy, then click Search.
This option works best for pages published after 2001; to find
historical mentions of dates, try using the Timeline
tool.
Personalization
Limit the results to content that is more personalized to you. For
example, see content from your friends ( Social)
or content from a geographical area ( Nearby).
See
the options
- Social:
If you're signed in to Google, see only
social search results. You'll
see publicly-accessible content from people in your social circle that
is relevant to your search. The idea is that content from your friends
and social contacts is often more relevant to you than content from
strangers.
- Nearby:
Only see results that might be especially relevant for your preferred
location indicated on the side of your results page. You can easily
specify your preferred location.
- Web
History: Limit the results
to pages you have or have not already visited. If you're signed in to
your Google Account and have
Web History enabled, you can use
this tool to restrict your results to pages you either have, or
haven't, visited in the past while Web History was enabled.
- Want
to find something new? Try Not
yet visited.
- Need
to remember a helpful site from last month? Visited
pages will focus your
search.
Display
options
This section lets you change the way results are displayed. The default
Standard
view shows you regular
Google results, where each result is composed of the page title and a
few lines of text (also known as the "snippet"). See
the options
- Sites
with images: See image
thumbnails from the page alongside the snippet for each result. They
can help you quickly identify whether the page is relevant to your
search term. For example, if you see an image of a furry little critter
when you search for [ mouse ], you can probably deduce that the page
isn't talking about computer equipment.
-
Translated foreign pages:
Sometimes, the best results for your search are written in another
language. Based on your search term, Translated foreign pages
automatically chooses the best language (or languages) to search in,
translates your search, and then translates the results back to the
language you prefer to read. Our automatic language selection isn't
perfect, of course, so if you'd like to search specific languages,
select them in the panel above the results.
-
Timeline: See results along
a timeline, which is especially useful if you're researching
information about a historical person or event. Click any section in
the timeline to zoom in on that time period. To change the time range,
click Search other dates
above the timeline to enter new start and end dates. Alternatively,
click the date links below the timeline to see results that mention
that particular year, month, or day.
- Reading
level: You can limit your
search results to a specific reading level (Basic,
Intermediate,
or Advanced).
Learn more about the
Reading level tool.
Content type
options
When you
select a specific type of content like Videos
or Images,
you'll often see a set of tools that are unique to that selection. For
example, if you select Images,
you can filter image results by size, type, and color. Learn more about
the
search tools specific to Google Images.
See
definitions for your search term using
Dictionary. You can also
find synonyms, images, usage examples, and learn if the term is a word
in other languages.
Discover
more results
If you're ever unsure about the precise terms you should use for your
search, start out with a broader search term, then use these tools to
discover alternative search terms. The
Something different option
lets you find parallel searches that you might find interesting.
|
|
|
Top 50
Search Engines
- Google
-
Google UK
- Google
Image Search
Google is a search engine that makes heavy use of link popularity as a
primary way to rank web sites. Users across the web have in essence
voted for good sites by linking to them.
- Ask
Jeeves
-
Jeeves For Kids
- Ask
Jeeves UK
Innovative online search service that processes plain-language queries
with surprising accuracy.
- Lycos
-
Lycos UK
Lycos has been around since the early days of the net and is still one
of the most popular search engines. The service employs human editors
for some of its listings, complemented by crawler-based results. The
name Lycos comes from the Latin for "wolf spider."
- Alta
Vista
-
Alta Vista UK
-
An awesome site from Digital, it maintains a HUGE index with powerful
and FAST search functions. Coverage is excellent so it is good for
broad searching and for offbeat subjects but you can be overwhelmed by
too many hits. The Advanced Search is useful for finding images,
MP3/audio and video files, and there's the useful Babelfish
Translator .
- LookSmart
-
Looksmart UK
LookSmart is the closest rival Yahoo has, in terms of being a
human-compiled directory of the web. The high quality of the directory
is thanks to a team of nearly 200 full-time professional editors.
- Yahoo!
-
Yahoo UK
Yahoo
is the web's most popular search service and has a well-deserved
reputation for helping people find information easily. The secret to
Yahoo's success is human beings. It is the largest human-compiled guide
to the web, employing 80 or more editors in an effort to categorize the
web. Yahoo has at least 1 million sites listed.
- MSN
(Microsoft)
Microsoft's MSN
service features both directory listings and search engine results.
Powered by Inktomi, this is now one of the most powerful search engines.
- BBC
- Search The Web
The BBC's "family friendly" search engine, based on Google search
technology. Results are clear, uncluttered, relevant, and commercial
free. "Our results are the ones that best match your search words - not
the ones advertisers want you to see." Excellent!
- GigaBlast
Gigablast is a new search-engine that looks set to challenge Google.
It's been set up by a New Mexican Software Engineer, and already
producing great search results.
- GO
Network
Go is the reincarnation of Infoseek, a newly designed site claiming to
have enhanced capabilities, with a 50% larger search index and search
results pages that are 30% faster. It offers portal features such as
personalization and free e-mail.
- HotBot
This search engine has a great many loyal fans. It very often comes up
with the goods where other engines fail.
- Open
Directory
NetScape's Open Directory Project aims to build the most comprehensive
human-reviewed directory of the web, by relying on a vast army of
volunteer editors.
- Teoma
Search
Teoma, which means "expert" in Gaelic, determines the authority or
quality of a site's content, by using Subject-Specific Popularity.
Subject-Specific Popularity ranks a site based on the number of
same-subject pages that reference it, not just general popularity.
- FAST
Search
One of the new generation of search services, armed with
next-generation technology. FAST aims to be bigger, speedier and more
accurate than the existing major search engines.
- Multi
Search
Multi Search is a powerful tool which will search all the top search
engines with one click.
- Webcrawler
One
of the first and biggest search engines, and it still produces highly
relevant results.
- REX
This is a VERY nice site - a little sense of
humour, very professionally done.
- HandiLinks
This is a great directory. HandiLinks listings are
all organized into a hierarchical index and it's fast and easy-to-use.
It has extensive categorization, and uses a frame design that aids
rather than getting in the way of searches.
- Snap.com
Snap.com is a human-compiled directory of web
sites, supplemented by search results. It aims to challenge Yahoo as the
champion of categorizing the web.
- Scour.Net
A
useful multimedia search engine. Use it to find audio, video, images and
animation Scour.Net takes you directly to the multimedia you are
searching for, quickly and easily.
- AAA
Matilda
The most popular search
engine outside of North America. Matilda is a very individual search
engine from Australia, and growing rapidly in popularity.
- UK
Plus
UK Plus features reviews of
UK-relevant sites, prepared by a team of journalists. Reviews are
grouped into various channels, covering everything from Arts and
Business to Travel and Work. They are also searchable.
- Direct
Hit
This Popularity Engine tracks
the sites that people actually select from the search results list. By
analyzing the activity of millions of previous Internet searchers,
Direct Hit determines the most popular and relevant sites for your
search request.
- Dogpile
Sends
a search to a customizable list of search engines, directories and
specialty search sites.
- Britannica
Internet Guide
This site strives to list
only the highest quality sites on the Net. It's now integrated into the
Britannicca.com website, so you get a high-quality search engine and
encyclopaedia at the same time.
- Go2Net
This is a metacrawler, in other words it searches
several other search engines in order to obtain its results. Rapidly
gaining in popularity as a web portal.
- Alba36.com
A human reviewed searchable directory to over 2700 specialty and
regional search engines, vortals, portals, topical guides, specialized
directories and the best web sites.
- WhosBest.com
A
search engine that gives ratings for each site.
- ANZWERS
ANZWERS (Australian and New Zealand Web Enquiry and
Research System) offers visitors the ability to quickly conduct region
and domain specific searches.
- Mamma
Sends search requests to seven major search
engines.
- NewsTrawler
Allows you to send a query to one or more news
sites from one location. Hundreds of sites are listed, by country and by
category.
- EuroSeek
EuroSeek is distinguished from other such engines
by a multi-lingual interface.
- Your
WebScout
A popular index of the
Net's best Web sites, discussion groups and archives.
- Northern
Light
A professional researchers'
favourite, because it organises material so well by topic. Based in
Canada.
- SelectSurf
An
excellent website directory, that doesn't overwhelm with too many sites.
- BrightGate
MetaSearch
Searches over 20 search engines using a parallel metasearch.
- NewsBot
HotBot's news-only search service.
- UKMax
UKMax allows users to search only pages within the
.uk domain or perform a worldwide search. It also offers some directory
listings, regional news content, weather reports, and portal features
such as portfolio tracking.
- SearchUK
Lists
UK-related domains.
- Global
Online Directory (GOD)
UK based search
engine.
- GoTo
GoTo is the only major search engine which sells
listings. Companies can pay money to be placed higher in the search
results, which GoTo feels improves relevancy.
- Internet
Sleuth
Allows you to search the
standard search engine choices or a huge number of specialty sites, all
from the same place.
- Search
Spaniel
This dog sniffs out several
of major search engines at the same time, or you can choose to do the
same with an extensive list of specialty search services, such as for
entertainment or employment information.
- SavvySearch
Metacrawler type engine.
- BOTBOT.com
BOTBOT parallel search engine and Web Directory - Get multiple results
using advanced parallel search technology. Search the Web, News, MP3,
Images, Audio, Video and more. Comes up with some good results.
- UK
Index
Lists sites based in the UK
or that are UK-relevant.
- Metafind
Similar to Dogpile, except that searches only go to
search engines.
- HuskySearch
The author of MetaCrawler continues research into
information retrieval with this University of Washington-based
metacrawler.
- Mirago
UK directory and search engine.
- HealthLinks
Massive directory listing over 4,600 health related websites in 150
categories.
Other
Search Engine related sites:
Excite
Search Voyeur
See what other users are searching for on the Excite search engine.
Updates every few seconds, and you can click on each query to see the
results.
McKinley
Search Voyeur
Similar to the Excite Search Voyeur.
Search
Engine Watch
Contains listings of general-purpose search engines, meta search
engines and specialty search engines, along with detailed searching
tips, a newsletter, and reviews and tests to keep you up to date with
what is hot and what is not.
Traffick
This Guide to Portals offers regular coverage of the major web portals:
Comparison chart, feature reviews, regular analysis, and daily web
portal news.
What-U-Seek
With What-U-Seek you can add a professional-level search engine to your
web site in five minutes or less.
Other
Search Engines:
PureSearch
Enter a query, select a search engine from those listed, and results
pop up in a new window.
ProFusion
University of Kansas metacrawler that allows searches of up to six
major search engines and also provides broken link detection.
Inference
Find
InFind is "The Intelligent Massively Fast Parallel Web Search", which
will search all the major search engines in the blink of an eyelid,
then categorize the results under useful headings. Excellent!
|