okay, first of all, what do you mean by a WS search?
there are two searches available up on the top of the page:

the top one, in the white area, I would call the Wordsmith search -- it enables you to search the whole site, even including a Google search.

the second one, in the gray area, is the forum search. here
you need to fill the form out properly for what you want; but, if you were to leave everything at the default values except for putting the word "keyword" in the keyword field, you should come up with your post here.