Perhaps you should try some spelling variations:
schrifttum uber » schrifttums der (Expand Search)
forderungs des » forderung des (Expand Search), forderung der (Expand Search)
des schrifttum » des schrifttums (Expand Search), das schrifttum (Expand Search), im schrifttum (Expand Search)
uber deutschen » der deutschen (Expand Search), uber deutschland (Expand Search), unsere deutschen (Expand Search)
band 6 » 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.

• Performing a fuzzy search may retrieve terms with similar spellings: forderungs des schrifttum uber deutschen aus bessarabien : band 6~.
• Adding a wildcard symbol may retrieve word variants: forderungs des schrifttum uber deutschen aus bessarabien : band 6*.