Perhaps you should try some spelling variations:
which school » welch school, which shook, white school
studien der » studie der, studenten der
sich school » rich school, sic school, high school
mac school » c school, sic school, music school
der mac » oder mac, der mach, der macht

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: (( studien der mac school of governance ) OR ( studien der ((sich school) OR (which school)) of governance )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( studien der mac school of governance ) or ( studien der ((sich school) OR (which school)) of governance ))".
• Adding a wildcard symbol may retrieve word variants: (( studien der mac school of governance ) or ( studien der ((sich school) OR (which school)) of governance ))*.