Perhaps you should try some spelling variations:
dopnauschwabisches schrifttum » donauschwabisches schrifttum (Expand Search), donauschwabisches christentum (Expand Search)
donauschwabische schrifttum » donauschwabisches schrifttum (Expand Search), donauschwabisches christentum (Expand Search)
heft 19 » heft 1 (Expand Search), heft 10 (Expand Search), heft 12 (Expand Search)
heft 9 » heft 3 (Expand Search), heft 1 (Expand Search), heft 2 (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: (( donauschwabische schrifttum heft 9 ) OR ( dopnauschwabisches schrifttum heft 19 ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( donauschwabische schrifttum heft 9 ) OR ( dopnauschwabisches schrifttum heft 19 ))".
• Adding a wildcard symbol may retrieve word variants: (( donauschwabische schrifttum heft 9 ) OR ( dopnauschwabisches schrifttum heft 19 ))*.