was looking for this as well, i eventually flagged the clips. Now from the top op my head i think you could create a smart filter as well, i guess this should work, but i'm not sure.
Unfortunately it is possible only for flagged and marked clips Uh.. I could have flagged them! Yeah! But now it is too late. I did it by hand through 300 clips cause i can't stop working! Thanks for the tip! I'll use it next time!