Perhaps you should try some spelling variations:
nordlichen europa » ostlichen europa (Expand Search)
instituts heft » instituts der (Expand Search)
volkskunde der » volkskunde _ (Expand Search), volkskunde e.v (Expand Search)
der nordlichen » dem nordlichen (Expand Search), den nordlichen (Expand Search), der ortlichen (Expand Search)
deutschen der » deutschen dorf (Expand Search), deutschen die (Expand Search), deutschen ev (Expand Search)
institut der » instituts der (Expand Search), instituts fur (Expand Search), instituts zur (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((instituts heft) OR (institut der)) volkskunde der deutschen der nordlichen europa~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((instituts heft) OR (institut der)) volkskunde der deutschen der nordlichen europa".
• Adding a wildcard symbol may retrieve word variants: ((instituts heft) OR (institut der)) volkskunde der deutschen der nordlichen europa*.