Perhaps you should try some spelling variations:
"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)
"donauschwabisches christentum eine. 23" » "donauschwabisches schrifttum eine. 23" (Expand Search), "donauschwabisches christbaum eine. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search)

Try widening your search to All Fields.

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 nr. 23") OR ("donauschwabisches christentum eine. 23"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dopnauschwabisches schrifttum nr. 23\") OR (\"donauschwabisches christentum eine. 23\"))".
• Removing quotes may allow a broader search: (( dopnauschwabisches schrifttum nr. 23 ) OR ( donauschwabisches christentum eine. 23 )).
• Adding a wildcard symbol may retrieve word variants: (("dopnauschwabisches schrifttum nr. 23") OR ("donauschwabisches christentum eine. 23"))*.