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