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