You can search using a single word. Or, use the tips below to refine your search
to find more specific results.
Look for a phrase - type clean water to find the exact phrase
clean water.
Since the search is not case-sensitive, this is equivalent to
Clean Water.
Look for two or more words at once by using the AND operator.
Example - type clean AND water to find documents that have both the word
clean and the word water anywhere.
Look for words that are close to each other by using the NEAR operator instead
of the AND operator.
When you
use NEAR, the closer together the words are, the higher the rank of the page, so the higher it appears in
the list of search results.
Example - type clean NEAR water to match documents where the word
clean is within 50 words of the word
water.
Look for synonyms or similar words by using the OR operator. Note that if you don't use the OR operator and search
using multiple words, the words are treated as a phrase.
Example - type pollution OR sanitation to find the word
pollution or the word
sanitation, but not necessarily both.
Limit your search by using the AND NOT operator to exclude words.
Example - type health AND NOT food to find all instances of
health, as long as health is not followed by the word
food.
Use double quotes if you want to use AND, OR, NOT, or NEAR literally.
Example - type "houses near water" to find documents with the phrase
houses near water. Without the double quotes,
this query would use the NEAR operator instead of the phrase. Use a single asterisk (*) to look for words that begin with the same letters.
Example - type bacteri* to find
bacterium, bacteria, bacterial, and so on.
Use a double asterisk (**) to look for all forms of a word.
Example - type drink** to
match
drink, drank, drinking, and
drunk.
The plus(+) and minus(-) operators can be prefixed to a term to be included or excluded.
There must be a space before the + or -. There must not be a space between the + or - and the following term.
- (without) The - (minus) is the most commonly used logic symbol. It means the answer should
EXCLUDE references to that item.
+ (mandatory) The + (plus) indicates that the answer should INCLUDE references to that item.
The wild-card character * (asterisk) may be used to match just the prefix of a word, or to find a word
with any letters
in the middle of the word.
Examples of some queries.
john will find john, as well as
John
"john public" will find
John Public
web-browser will find
Web browser, as well as
web-browser
John*Public will find
John Q. Public, as well as
John Public
456*a*def will find
1-456-789-ABCDEF
activate will find
activate, as well as activation, as well as
activated, ...
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