How can I search within documents from the Finder? I scan documents (receipts, etc) PDFs and the software does OCR to make them searchable. I can search them from within Preview, but I'd like to be able to search within the documents in Finder (or Spotlight). Is there a way to do this? Or a third-party app that does it?
There is a free app, EasyFind, that will let you search files. Its available from the app store. It has a fast search engine and you can select where to search. Click the setting button on the top left to select which file extension to search in.