Perhaps you should try some spelling variations:
"nationale region staat" » "nationale din staat" (Expand Search), "nationalae region staat" (Expand Search), "nationalene region staat" (Expand Search), "nationalere region staat" (Expand Search)
"national regional staat" » "nationala regional staat" (Expand Search), "nationalen regional staat" (Expand Search), "nationaler regional staat" (Expand Search)
"nationalena region staat" » "nationalaena region staat" (Expand Search), "nationalenena region staat" (Expand Search), "nationalerena 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: (("national regional staat") OR ((("nationalena region staat") OR ("nationale region staat"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"national regional staat\") OR (((\"nationalena region staat\") OR (\"nationale region staat\"))))*".
• Removing quotes may allow a broader search: (( national regional staat ) OR ((( nationalena region staat ) OR ( nationale region staat ))))*.