Perhaps you should try some spelling variations:
geschichte sudosteuropa » geschichte sudosteuropas (Expand Search)
deutsche kultur » ostdeutsche kultur (Expand Search)
die geschichte » zur geschichte (Expand Search)
institut der » instituts der (Expand Search), instituts zur (Expand Search)
kultur die » kultur der (Expand Search), kultur im (Expand Search), kultur mit (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: ((institut der) OR (instituts fur)) deutsche kultur die geschichte sudosteuropa~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((institut der) OR (instituts fur)) deutsche kultur die geschichte sudosteuropa".
• Adding a wildcard symbol may retrieve word variants: ((institut der) OR (instituts fur)) deutsche kultur die geschichte sudosteuropa*.