the old tool is and has always been there for you to use.  on the new search just click the old search link at the top of the page if you prefer that one.  however good luck wtih your chances.  the old search was our #1 complaint from members.  searches for terms that existed would often not show up

also you can search all forums at once for matches.  just click SEARCH button at top right of any forum page instead of doing the per forum search.  Or at the top of the forums you can change the drop down to search all forums instead of the one you are in