Perhaps you should try some spelling variations:
"nationale region staat" » "nationale din staat" (Expand Search)
"nationales regional staat" » "nationalen regional staat" (Expand Search), "nationaler regional staat" (Expand Search), "nationalist regional staat" (Expand Search)
"nationala region staat" » "nationalen region staat" (Expand Search), "nationaler region staat" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("nationales regional staat") OR ((("nationala region staat") OR ("nationale region staat"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nationales regional staat\") OR (((\"nationala region staat\") OR (\"nationale region staat\"))))".
• Removing quotes may allow a broader search: (( nationales regional staat ) OR ((( nationala region staat ) OR ( nationale region staat )))).
• Adding a wildcard symbol may retrieve word variants: (("nationales regional staat") OR ((("nationala region staat") OR ("nationale region staat"))))*.