Perhaps you should try some spelling variations:
"nationaler regional state" » "nationalen regional state" (Expand Search), "nationaler region state" (Expand Search)
"nationala regional state" » "nationala region state" (Expand Search), "nationalen regional state" (Expand Search)
"nationale regional spate" » "nationale region spate" (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: (((("nationaler regional state") OR ("nationala regional state"))) OR ("nationale regional spate"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nationaler regional state\") OR (\"nationala regional state\"))) OR (\"nationale regional spate\"))".
• Removing quotes may allow a broader search: (((( nationaler regional state ) OR ( nationala regional state ))) OR ( nationale regional spate )).
• Adding a wildcard symbol may retrieve word variants: (((("nationaler regional state") OR ("nationala regional state"))) OR ("nationale regional spate"))*.