Set Spotlight Search Priorities
You can easily adjust the search priorities in Spotlight so that Documents or anything else are listed first in the Spotlight search results. Here’s how to do this:
* Launch System Preferences
* Click the Spotlight icon
* You’ll see a list of search categories, you can drag these around at will
* The higher on the list the higher the search priority
* Set your desired search categories and priorities and close System Preferences

If you’re interested, learn how to greatly improve Spotlight searches with search operators, you will be amazed how precise you can get your Spotlight searches to be!

I wonder if this will also change the behavior in programs that use the spotlight indexing. Like Goole Quick search or Alfred. Hmmm. Must test.