Perhaps you should try some spelling variations:
"donauschwabisches christentum und. 23" » "donauschwabisches schrifttum und. 23" (Expand Search), "donauschwabisches christentum eine. 23" (Expand Search), "donauschwabisches christen und. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search)
"dopnauschwabisches schrifttum nr. 23" » "donauschwabisches schrifttum nr. 23" (Expand Search), "dopnauschwabisches schrifttum der. 23" (Expand Search), "dopnauschwabisches schrifttum und. 23" (Expand Search), "dopnauschwabisches schrifttum _. 23" (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 und. 23\") OR (\"dopnauschwabisches schrifttum nr. 23\"))~".
• Removing quotes may allow a broader search: (( donauschwabisches christentum und. 23 ) OR ( dopnauschwabisches schrifttum nr. 23 ))~.
• Adding a wildcard symbol may retrieve word variants: (("donauschwabisches christentum und. 23") OR ("dopnauschwabisches schrifttum nr. 23"))*.