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 heft. 23" (Expand Search), "dopnauschwabisches schrifttum und. 23" (Expand Search)
"donauschwabischen schrifttum uber. 23" » "donauschwabisches schrifttum uber. 23" (Expand Search), "donauschwabisches christentum uber. 23" (Expand Search), "donauschwabischen geschichte uber. 23" (Expand Search), "donauschwabischen schrifttums der. 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: (("dopnauschwabisches schrifttum der. 23") OR ("donauschwabischen schrifttum uber. 23"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dopnauschwabisches schrifttum der. 23\") OR (\"donauschwabischen schrifttum uber. 23\"))".
• Removing quotes may allow a broader search: (( dopnauschwabisches schrifttum der. 23 ) OR ( donauschwabischen schrifttum uber. 23 )).
• Adding a wildcard symbol may retrieve word variants: (("dopnauschwabisches schrifttum der. 23") OR ("donauschwabischen schrifttum uber. 23"))*.