Anyone know of any plugins that would allow a site admin to set synonyms for searches?
For instance someone visits a site and searches: "WordPress is Easy" and any posts that contain that phrase are returned, but so are any posts that contain "WordPress is Simple". The simple and easy synonyms would need to be changeable by the admin.
Anyone know of such a plugin? I've tried googling it, but only get a lot of articles on writing good content using synonyms. I've also checked out the big time search plugins Search Unleashed and Search Everything and they don't seem to have anything like this.
Any suggestions? I don't really have the time to write this plugin myself, but it's looking like I may have to.