Perhaps you should try some spelling variations:
"dopnauschwabisches schrifttum heft 1" » "donauschwabisches schrifttum heft 1" (Expand Search), "dopnauschwabisches schrifttum heft 3" (Expand Search)
"donauschwabisches christentum heft 9" » "donauschwabisches schrifttum heft 9" (Expand Search), "donauschwabisches christentum der 9" (Expand Search), "donauschwabisches christentum eine 9" (Expand Search), "donauschwabisches christentum heft 3" (Expand Search), "donauschwabisches christentum heft 2" (Expand Search), "donauschwabisches christentum heft 4" (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: "((\"dopnauschwabisches schrifttum heft 1\") OR (\"donauschwabisches christentum heft 9\"))~".
• Removing quotes may allow a broader search: (( dopnauschwabisches schrifttum heft 1 ) OR ( donauschwabisches christentum heft 9 ))~.
• Adding a wildcard symbol may retrieve word variants: (("dopnauschwabisches schrifttum heft 1") OR ("donauschwabisches christentum heft 9"))*.