Perhaps you should try some spelling variations:
nationaler » nationale (Expand Search), nationala (Expand Search)
nationaleser » nationale (Expand Search), nationalist (Expand Search), nationaleer (Expand Search), nationalister (Expand Search), nationalaer (Expand Search)
nationales » nationale (Expand Search), nationalist (Expand Search), nationala (Expand Search)
nationalen » nationale (Expand Search)
nationalaen » nationale (Expand Search), nationala (Expand Search), rationalen (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 OR (nationaleser OR nationales)) OR (nationalen OR nationalaen)) christian prof~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nationaler OR (nationaleser OR nationales)) OR (nationalen OR nationalaen)) christian prof".
• Adding a wildcard symbol may retrieve word variants: ((nationaler OR (nationaleser OR nationales)) OR (nationalen OR nationalaen)) christian prof*.