Perhaps you should try some spelling variations:
"dopnauschwabisches schrifttum nr. 23" » "donauschwabisches schrifttum nr. 23" (Expand Search), "donauschwabisches christentum nr. 23" (Expand Search), "dopnauschwabisches schrifttum der. 23" (Expand Search), "dopnauschwabisches schrifttum und. 23" (Expand Search), "dopnauschwabisches schrifttum _. 23" (Expand Search)
"donauschwabischen geschichte uber. 23" » "donauschwabischen geschichte der. 23" (Expand Search), "donauschwabischen geschichte einer. 23" (Expand Search), "donauschwabischen geschichte ihrer. 23" (Expand Search), "donauschwabische geschichte uber. 23" (Expand Search), "donauschwaben geschichte uber. 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: (("donauschwabischen geschichte uber. 23") OR ("dopnauschwabisches schrifttum nr. 23"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"donauschwabischen geschichte uber. 23\") OR (\"dopnauschwabisches schrifttum nr. 23\"))".
• Removing quotes may allow a broader search: (( donauschwabischen geschichte uber. 23 ) OR ( dopnauschwabisches schrifttum nr. 23 )).
• Adding a wildcard symbol may retrieve word variants: (("donauschwabischen geschichte uber. 23") OR ("dopnauschwabisches schrifttum nr. 23"))*.