Option for exact word search
Have an option for simple or complex searches to specify an exact or partial match on a word or phrase. For instance, if we specified exact match with "gate" then besides " gate" "gate," or "gate." would be allowed but not "investigate." For phrases, if we specified an exact match for "lock gate," only those two words in order would qualify whereas a partial search would allow either of the two words as a hit and rank search results according to number of search words contained in hits, and perhaps their proximity and/or order. The first part of this request, being able to search for EXACT matches, is most important to me. It cuts down on false positives.