Perhaps you should try some spelling variations:
des schrifttum » des schrifttums (Expand Search), das schrifttum (Expand Search), im schrifttum (Expand Search)
schrifttum den » schrifttum der (Expand Search), schrifttums der (Expand Search), schrifttum heft (Expand Search)
den deutschen » der deutschen (Expand Search), des deutschen (Expand Search), die deutschen (Expand Search)
band 4 » band 2 (Expand Search), band i (Expand Search)
band 1 » band 2 (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: "forderung des schrifttum den deutschen aus bessarabien : ((band 4) OR (band 1))~".
• Adding a wildcard symbol may retrieve word variants: forderung des schrifttum den deutschen aus bessarabien : ((band 4) OR (band 1))*.