Boolean searching is a method of searching using specific words called operators that instruct the search engine how to retrieve results. When using Boolean operators (AND, OR, NOT) please note that they MUST BE CAPITALIZED!
AND - to limit searches to find items containing all words or phrases combined with this operator, for instance cats AND dogs will retrieve all items that contain BOTH the words "cats" and "dogs".
OR - to enlarge searches to find items containing any of the words or phrases surrounding this operator will retrieve all items that contain EITHER of the words entered in the search field.
NOT - to exclude items containing the word following this operator, e.g.training NOT cat will retrieve all items that contain the word "training" EXCEPT those also containing the word "cat".
Parentheses can be used in the search query to group search terms into sets, and operators can then be applied to the whole set, e.g.(cats OR dogs) AND (training OR discipline)