Looking for album and track-information mostly makes only sense if your searching parameters include albumartist and album.
This becomes clearly obvious if you search for the album "Greatest Hits".
With the scripts for itunes, amazon, Musik-Sammler it is possible (or I myself made it work) to look for the albumartist/artist and the album.
Is this possible for MusicBrainz and discogs too?
I found no easy way to change the script in that way as I did in others scripts (just changing "Search by"). and this easy way is the only way for me as I don't have enough knowledge to do it different.