I have the same problem, and i've configured as described in the link provided, but still does not work. Live search works though, returning user accounts only. Does anyone have an idea where else i could check?
I fixed my problem: I have a custom type and property names starting with a number. I read somewhere there is a bug like this, and apparently exists in the alfresco version im using: Alfresco Community v5.2.0 (r135134-b14). Created new type and properties with fixed names, and reuploaded affected files with fixed metadata.