Perhaps you should try some spelling variations:
"donauschwabisches christentum heft 10" » "donauschwabisches schrifttum heft 10" (Expand Search), "donauschwabisches christentum der 10" (Expand Search), "donauschwabisches christentum eine 10" (Expand Search), "donauschwabisches christentum heft 12" (Expand Search), "donauschwabisches christentum heft 19" (Expand Search), "donauschwabisches christentum heft 30" (Expand Search)
"dopnauschwabisches schrifttum heft 1" » "donauschwabisches schrifttum heft 1" (Expand Search), "dopnauschwabisches schrifttum heft 3" (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 christentum heft 10\") OR (\"dopnauschwabisches schrifttum heft 1\"))~".
• Removing quotes may allow a broader search: (( donauschwabisches christentum heft 10 ) OR ( dopnauschwabisches schrifttum heft 1 ))~.
• Adding a wildcard symbol may retrieve word variants: (("donauschwabisches christentum heft 10") OR ("dopnauschwabisches schrifttum heft 1"))*.