Perhaps you should try some spelling variations:
sudostdeutschen historische » sudostdeutschen historischen (Expand Search)
historische kommission » historischen kommission (Expand Search)
der sudostdeutschen » des sudostdeutschen (Expand Search)
band 25 » band 2 (Expand Search), band 5 (Expand Search), band 21 (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: buchreihe der sudostdeutschen historische kommission, band 25~.
• Adding a wildcard symbol may retrieve word variants: buchreihe der sudostdeutschen historische kommission, band 25*.