when you search say only by documents and you see a search result thats not a .torrent, you are looking at a partial file in some torrent. if you happen to download another file that belongs to the same torrent you will see how it automatically gets grouped with the previous files on the transfers screen.
we will add support for pre examining a torrent just like on the desktop soon.
currently theres no filtering as this is the first version.
no guide yet.