Perhaps you should try some spelling variations:
"dopnauschwabisches schrifttum der. 23" » "donauschwabisches schrifttum der. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search), "dopnauschwabisches schrifttums der. 23" (Expand Search), "dopnauschwabisches schrifttum uber. 23" (Expand Search), "dopnauschwabisches schrifttum heft. 23" (Expand Search)
"donauschwabische schrifttum _. 23" » "donauschwabisches schrifttum _. 23" (Expand Search), "donauschwabisches christentum _. 23" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("donauschwabische schrifttum _. 23") OR ("dopnauschwabisches schrifttum der. 23"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"donauschwabische schrifttum _. 23\") OR (\"dopnauschwabisches schrifttum der. 23\"))".
• Removing quotes may allow a broader search: (( donauschwabische schrifttum _. 23 ) OR ( dopnauschwabisches schrifttum der. 23 )).
• Adding a wildcard symbol may retrieve word variants: (("donauschwabische schrifttum _. 23") OR ("dopnauschwabisches schrifttum der. 23"))*.