Perhaps you should try some spelling variations:
"nationale din stadt" » "nationale die stadt" (Expand Search), "nationale die stadte" (Expand Search), "nationale der stadt" (Expand Search)
"nationaler regional state" » "nationalen regional state" (Expand Search), "nationala regional state" (Expand Search), "nationaler religional state" (Expand Search)
"nationaleen region staat" » "nationaleen religion staat" (Expand Search)

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: "((\"nationaler regional state\") OR (((\"nationaleen region staat\") OR (\"nationale din stadt\"))))~".
• Removing quotes may allow a broader search: (( nationaler regional state ) OR ((( nationaleen region staat ) OR ( nationale din stadt ))))~.
• Adding a wildcard symbol may retrieve word variants: (("nationaler regional state") OR ((("nationaleen region staat") OR ("nationale din stadt"))))*.