I definitely think you need to re-word your titles. The first few words are the most important for search so those should be exactly what you item is- a couple examples-
I didn't even know this was a print util I clicked it, so anybody looking for an art print of a Christmas cat won't eve see this. You'll get people searching "sassy cat" but who will search that? If you still want it in your title, I'd move it to the back. Something like "Art Print, Christmas cat with ornament, cute holiday decor" will get you way more views.
http://www.etsy.com/listing/85277632/sassy-cat-its-my-christmas-bulb-byor this one-
http://www.etsy.com/listing/84802477/color-my-heart-pink-car-charm-key-chainto be at the front of search someone will have to search 'color my heart', but you want this to show in front when people search key chains (I'd also call this a purse charm) Try something like " Key Chain or purse charm, pink beads with hearts"
or this-
http://www.etsy.com/listing/41427575/sale-jasper-soft-green-jasper-stone-18You do't have the most important word, necklace, in the title. I'd try something like "Necklace and Earring set, green jasper gem stones and beads." I would definitely mention in the title that you are sending the earrings too, I didn't know they came with the necklace until I read the description, and if somebody is shopping for both with a budget of say under 20 they'll be more likely to click knowing beforehand that they got both.
Hope that helps :)