Hi
Bear in mind that I don't know your category at all so I can only comment on what I can see in front of me and not hazard a guess how people have been searching or why you can only see some things in certain places.
An item picked at random -
http://www.etsy.com/listing/99655375/wedding-card-anniversary-card-engagementhttp://www.etsy.com/listing/99655375/wedding-card-anniversary-card-engagementTitle - a bit wordy and contains repetition. Don't repeat words, you have card in there four times, it only needs to be in once. At the moment you are wasting valuable url space by repeating the word. Make sure your most important keywords ideally fit into the url. I would suggest rearranging the text to something like - love word greeting card, pink flower silver embossed heart and then include anniversary etc. I am not saying this is perfect and it is up to you if you include suggested uses as keywords or not. Do not though that you can't include these words in your tags (see below.)
Description - first part should be a sentence or two saying what the item is and including all your keywords and a bit more. Then starting in a new paragraph give all the details about the product. At the end include active links to other items/sections/policies.
Tags - they seem ok in the sense that they are 2-3 word phrases. Just make sure that you include all your keywords from your titles in those 2-3 word searchable phrases. Now onto the tricky subject. Technically you can't call this item anything other that a love card because there is no reference to the word wedding or anniversary or alike in the actual design and this makes those words suggested uses which are not allowed. You can only say what the item is and not what you could use it for. Now as you have used the Wedding sub sub category I would suggest that you contact Integrity and get confirmation on is this ok or not as I wouldn't want you to get into trouble. Email integrity@etsy.com. As it stands without that confirmation either way you should take out the following tags - wedding heart card, pink wedding card, anniversary card, stamped wedding card, congrats card, happy wedding day.
See 1 & 2 in this for further information on the above and a lot more.
http://www.etsy.com/listing/99655375/wedding-card-anniversary-card-engagementClaire
Team Leader