Perhaps you should try some spelling variations:
sudostlichen europa » ostlichen europa (Expand Search)
deutschen bauern » deutschen aus (Expand Search)
volkskunde der » volkskunde _ (Expand Search)
volkskunde e.v » volkskunde _ (Expand Search)
instituts zur » instituts fur (Expand Search), instituts der (Expand Search), institut der (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 zur ((volkskunde der) OR (volkskunde e.v)) deutschen bauern sudostlichen europa~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "instituts zur ((volkskunde der) OR (volkskunde e.v)) deutschen bauern sudostlichen europa".
• Adding a wildcard symbol may retrieve word variants: instituts zur ((volkskunde der) OR (volkskunde e.v)) deutschen bauern sudostlichen europa*.