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