Final Fantasy XIV Database - Ffxivpro.com

There's an advanced search function that will let you do this. It's not as clearly labeled as the item power search, but it's easy enough to find. Under player search, just click the go button and click advanced search button on the top right side of your screen. Additionally, you can search for the specific item you are looking to have crafted and click "find a crafter" to have the site list people who can make the item.