Use the NOT connector in front of any search expression to reverse its meaning—when you want to exclude a group of documents from a search. For example, to find documents that contain the word “applesauce” but do not contain the word “pear,” type applesauce AND NOT pear.
You can use the NOT connector 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.