Perhaps you should try some spelling variations:
"studien der _ school of governance" » "studenten der _ school of governance"
"studie der pisa school of governance" » "studie der pisa schools of governance", "studie der pa school of governance", "studie der pisa schock of governance", "studium der pisa school of governance"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"studien der _ school of governance\") OR (\"studie der pisa school of governance\"))*".
• Removing quotes may allow a broader search: (( studien der _ school of governance ) OR ( studie der pisa school of governance ))*.