| Operator |
Example |
Result |
| AND |
history AND art |
Searches for results that contain both words. |
| OR |
history OR art |
Searches for results that contain either word. |
| NOT |
history NOT art |
Eliminates results in which the word is found. |
| ( ) |
(psychiatry AND psychology) OR sociology |
Words in parentheses are evaluated first. |
| " " |
"American Studies" |
Words in quotes are searched as a phrase. |
| |
American Studies |
Adjacent words are searched as a phrase. |
| * |
histor* |
Indicates any number of characters. histor* will return
history, histories or historical. |
| ? |
histor? |
Indicates any single character. histor? will return history. |
