Perhaps you should try some spelling variations:
donauschwabisches christentum » donauschwabisches schrifttum (Expand Search), dopnauschwabisches schrifttum (Expand Search)
donauschwabische schrifttum » donauschwabisches schrifttum (Expand Search), dopnauschwabisches schrifttum (Expand Search)
christentum heft » christentum der (Expand Search), christentum eine (Expand Search)
heft 19 » heft 1 (Expand Search), heft 9 (Expand Search), heft 10 (Expand Search)
heft 2 » heft 3 (Expand Search), heft 1 (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: "(( donauschwabische schrifttum heft 2 ) OR ( donauschwabisches christentum heft 19 ))~".
• Adding a wildcard symbol may retrieve word variants: (( donauschwabische schrifttum heft 2 ) OR ( donauschwabisches christentum heft 19 ))*.