Perhaps you should try some spelling variations:
"studies thema poplitea vernieuwing" » "studies thema politik vernieuwing", "studies vena poplitea vernieuwing"
"studies thema polite vernieuwing" » "studies thema politik vernieuwing", "studies thema plot vernieuwing"

Try widening your search to All Fields.

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: "((\"studies thema polite vernieuwing\") OR (\"studies thema poplitea vernieuwing\"))".
• Removing quotes may allow a broader search: (( studies thema polite vernieuwing ) OR ( studies thema poplitea vernieuwing )).
• Adding a wildcard symbol may retrieve word variants: (("studies thema polite vernieuwing") OR ("studies thema poplitea vernieuwing"))*.