Perhaps you should try some spelling variations:
"studies over political vernieuwing" » "studies over political interviewing", "studies other political vernieuwing", "studies power political vernieuwing", "studies order political vernieuwing", "studies novel political vernieuwing", "studies overview political vernieuwing"
"Studies over positive vernieuwing" » "Studies over positive veranderung", "Studies other positive vernieuwing", "Studies oder positiver vernieuwing", "Studies der positive vernieuwing"
"Studies over politieke vernieuwing" » "Studies over policies vernieuwing", "Studies en politieke vernieuwing"

Try widening your search to All Fields.

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: (((("Studies over politieke vernieuwing") OR ("Studies over positive vernieuwing"))) OR ("studies over political vernieuwing")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Studies over politieke vernieuwing\") OR (\"Studies over positive vernieuwing\"))) or (\"studies over political vernieuwing\"))".
• Removing quotes may allow a broader search: (((( Studies over politieke vernieuwing ) OR ( Studies over positive vernieuwing ))) or ( studies over political vernieuwing )).
• Adding a wildcard symbol may retrieve word variants: (((("Studies over politieke vernieuwing") OR ("Studies over positive vernieuwing"))) or ("studies over political vernieuwing"))*.