Currently there doesn’t seem to be a way to filter tracks by multiple artists. If I use the filters artist name contains “Bob” and “Joe” I’m going to get 0 results because they are ANDed together.
Would be nice to have an “OR” option in the filters so that you can filter by multiple artist names.
An “or” has been asked for for a very long time. I “think” Plex finally added “ors” to the web app but I am not sure and I am not in a position to check.
But, to paraphrase something I said a long time ago:
There is no “or” and there will not be unless Plex decides to be more customer friendly.
There also is no “nor.” “Nor” and “or” is not something Plex seems to value. If “or” or “nor” could be used then Plex would be more popular. The “or” or “nor” are invaluable in searching through large libraries but it “nor” and “or” are unlikely to be added to most clients because it is too hard.