Perhaps you should try some spelling variations:
frances » france, francesco
-universit%c3%a4t%20graz%22 » -universita%c3%a4t%20graz%22, -universitat%c3%a4t%20graz%22, -universitare%c3%a4t%20graz%22
universitats%c3%a4t%20graz%22 » universitaats%c3%a4t%20graz%22, universitatats%c3%a4t%20graz%22, universitareats%c3%a4t%20graz%22

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: %22karl-(franzens OR frances)(-universit%c3%a4t%20graz%22 OR -universitats%c3%a4t%20graz%22).
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22karl-(franzens or frances)(-universit%c3%a4t%20graz%22 OR -universitats%c3%a4t%20graz%22)".
• Adding a wildcard symbol may retrieve word variants: %22karl-(franzens or frances)(-universit%c3%a4t%20graz%22 OR -universitats%c3%a4t%20graz%22)*.