Perhaps you should try some spelling variations:
fur sudostdeutsches » fur sudostdeutsche (Expand Search), der sudostdeutschen (Expand Search), des sudostdeutsches (Expand Search)
die geschichte » zur geschichte (Expand Search)
archiv die » archiv der (Expand Search), archiv iii (Expand Search), archiv des (Expand Search)
instituts » institut (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 fur sudostdeutsches archiv die geschichte sudosteuropas~.
• Adding a wildcard symbol may retrieve word variants: instituts fur sudostdeutsches archiv die geschichte sudosteuropas*.