Produces search results with all of your keywords. Example: government AND extraterrestrials Using the AND operator will narrow down your search because it will tell the search engine to produce results that have all of the terms connected by AND. In the diagram below your keywords are represented by two circles. The area where the circles overlap represents the area where both words appear together. This area is shaded because a search for government AND extraterrestrials requires that the search engine return results that have both words. If you assume that the area of the circles represents the number of hits these two words will produce you can see that performing a search using the AND operator returns a comparatively small set of hits.