Search Help
Boolean expressions are words like OR, AND, AND NOT,
and NEAR used to create relationships among the keywords in your search.
Parentheses ( ) can also be used in the Boolean search box to group
your search criteria. Below is
a list of expressions with their corresponding symbol (you may use either) and
function.
<< back to search
| Expression
| Symbol
| Action
|
| AND |
& |
Finds documents containing all of the
pecified words or phrases. peanut AND butter finds documents with both the word peanut
and the word butter.
|
| OR |
| |
Finds documents containing at least one of the specified words or
phrases. Peanut OR butter finds documents containing either peanut or
butter. The found documents could contain both items, but not necessarily.
|
| AND NOT |
! |
Excludes documents containing
the specified word or phrase. Peanut AND NOT butter finds documents with
peanut but not containing butter. NOT must be used with another operator, like AND.
|
| NEAR |
~ |
Finds documents containing both
specified words or phrases within 10 words of each other. peanut NEAR butter
would find documents with peanut butter, but probably not any other kind of butter.
|
| |
() |
Use parentheses to group
complex Boolean phrases. For example, (peanut AND butter) AND (jelly or jam)
finds documents with the words 'peanut butter and jelly' or 'peanut butter and jam' or both.
|
|
