Perhaps you should try some spelling variations:
dopnauschwabisches schrifttum » donauschwabisches christentum (Expand Search)
schrifttum uber » schrifttums der (Expand Search)
schrifttum nr » schrifttum der (Expand Search), schrifttum und (Expand Search), schrifttum _ (Expand Search)
donauschwabisches » donauschwabische (Expand Search), donauschwabischen (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: "(( donauschwabisches schrifttum uber. 23 ) OR ( dopnauschwabisches schrifttum nr. 23 ))~".
• Adding a wildcard symbol may retrieve word variants: (( donauschwabisches schrifttum uber. 23 ) OR ( dopnauschwabisches schrifttum nr. 23 ))*.