Use the NOT connector to exclude terms from the keyword search. For example, to find documents that contain the word applesauce but do not contain the word pear the search would be:
applesauce and not pear
The NOT connector can be used at the start of a search request to exclude all documents that contain particular words. For example, to exclude documents that contain the word "apple," type NOT apple. If NOT is not the first connector in a search request, however, you must combine it with AND or OR. For example, you may not type applesauce NOT pear; instead, type applesauce AND NOT pear or applesauce OR NOT pear.