Perhaps you should try some spelling variations:
sudostdeutsche historischen » sudostdeutschen historischen (Expand Search)
des sudostdeutsche » des sudostdeutschen (Expand Search), des sudostdeutsches (Expand Search), der sudostdeutschen (Expand Search)
buchreihe des » buchreihe der (Expand Search), bucherei des (Expand Search)
band 21 » band 2 (Expand Search), band 1 (Expand Search), band 11 (Expand Search)
band 5 » band 2 (Expand Search), band 1 (Expand Search), band i (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "buchreihe des sudostdeutsche historischen kommission, ((band 21) OR (band 5))~".
• Adding a wildcard symbol may retrieve word variants: buchreihe des sudostdeutsche historischen kommission, ((band 21) OR (band 5))*.