Searching the Contents of Torrents

And I don’t mean the .torrent file, I’m more focused on the file containing the actual content. For a personal project I’d like to be able to search for information stored in text/DOC format or in compressed archives but short of scripting a down-loader to get each file I find, pulling it apart and searching manually I don’t see any options. As far as I can tell the main search engines stop at the .torrent file.

Anyone know of any that actually download and index the content?