With newsleecher you use the super search tab and it does a search of all the groups for like 2000 days (maybe longer) and returns a result. You can then use the filter box to take out results you don't want (just like google)... so "mp3" will show only posts with mp3 in the name, while "-mp3" will remove anything with mp3 in the name. What I typically do if I am not using nzbmatrix is search for something like "skyward sword" then filter it with "NTSC Wii iso" or something to make it show what I want... or the release group that I am looking for. Half the time I use it just to find something I saw on a private torrent site... so I would use supersearch and find the exact thing by searching "name.of.game.format.groupname" and it gives a nice result.
Newsleecher will also auto monitor/repair/extract your rars and put them in folders if you want it to. It is a nice one stop shop for everything. I pay the 3 bucks a month for the license to always have supersearch.