Strategic Board search engine supports wildcard search or maybe we can call it partial search. Partial search means that every keyword or phrase you search for is matched mutiple times against every variant of the keyword or phrase. For example if you search for the keyword 'mic' then both posts that contain the keyword microsoft will appear as well as posts with the keyword microsystems. It works the same way for phrases where you can search "microsoft offi" and this will yield results with "microsoft office xp" and "microsoft office vista".
This is an excellent tool to locate wider spectrum of posts and not only the ones with perfect matches.