LW does not comform to all of the protocols required of many torrent sites, so that may have been the problem. You could try other torrent sites to find the file. You can also try a 'true' torrent client, such as Vuze or uTorrent (both are free).

Of course, none of that will make a difference if the file is simply unpopular. Still, searching for torrents does not limit you to the Gnutella network (as does LW).