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