Perhaps you should try some spelling variations:
african universities » american university
german universities » american universities, european universities, between universities
german university » american university, african university
brown university » between university, boston university

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((brown university) OR (((german university) OR (((german universities) OR (african universities)))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((brown university) or (((german university) or (((german universities) OR (african universities))))))".
• Adding a wildcard symbol may retrieve word variants: ((brown university) or (((german university) or (((german universities) OR (african universities))))))*.