Search Operators

You can use AND, OR, NOT, NEAR, and SAME to combine terms to broaden or narrow your search.

Search operators are not case sensitive; OR, Or, and or return the same results.

With the exception of All Field (AF) searches in the Web of Science Core Collection, there is no limit to the number of Boolean operators used in a single query. All Fields searches are limited to 49 Boolean or proximity operators.

The Korean Journal Database doesn't include SAME as a search operator.