Amy, this is only a partial recommendation, as I have this program on my iOS devices (it's also available for desktop) but haven't really used it. But the description and testimonials for Evernote are very strong, and in theory at least it will do what you want: Take a smartphone shot of each recipe, store them in folders in Evernote, and you can conduct searches for words in PDFs and even in photos.
Check the website,
http://www.evernote.com/