I keep having the same problem with spotlight. I will search for a document simply putting in the a word, such as 'papacy' (history work), knowing that there are at least half a dozen documents with 'papacy' within them. Yet, I get 'No results found'. Or I can type in exact names that I have saved documents as, and still get 'No results found'. And yet, I can go through finder and find the documents myself. This is really annoying as I am doing coursework and type in simple phrases like 'relations with papcy' which is a common theme in my documents, and yet get no results! Is there any way I can force spotlight to restart itself, hoping this will fix the problem.