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