Perhaps you should try some spelling variations:
sudostdeutschen raumes » sudostdeutschen lander (Expand Search), sudostdeuropaischen raumes (Expand Search)
der sudostdeutschen » des sudostdeutschen (Expand Search)
schriftenreihe zur » schriftenreihe der (Expand Search), schriftenreihe des (Expand Search)
zur problem » zum problem (Expand Search), fur probleme (Expand Search)
problem der » problem des (Expand Search), probleme des (Expand Search), problem zur (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (sudost OR sudosten)-stimmen: schriftenreihe zur problem der sudostdeutschen raumes.