i've found that i get more hits and views when i use simpler terms.
to be honest, most buyers don't know what half the keywords are that we sellers use. they don't know what polymer clay is, or if they do, they probably aren't using it to search.
try "dumbing" it down and see if it helps.
for example:
http://www.etsy.com/listing/70438820/fake-plugs-simply-bold-infinity-twistsmaybe try Fake Plug Earrings, Faux Gauges, Vibrant Yellow Twists, Infinity, Bold Jewelry or something similar? the key words people would use to search might be "fake plug", "faux gauge", a color, and probably the word "earrings" or "jewelry"?