Perhaps you should try some spelling variations:
"donauschwabisches christentum eine 19" » "donauschwabisches schrifttum eine 19" (Expand Search), "dopnauschwabisches schrifttum eine 19" (Expand Search), "donauschwabisches christbaum eine 19" (Expand Search), "donauschwabisches christentum der 19" (Expand Search)
"donauschwabischen schrifttum heft 1" » "donauschwabisches schrifttum heft 1" (Expand Search), "dopnauschwabisches schrifttum heft 1" (Expand Search), "donauschwabischen geschichte heft 1" (Expand Search), "donauschwabischen schrifttum heft 3" (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 heft 1") OR ("donauschwabisches christentum eine 19"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"donauschwabischen schrifttum heft 1\") OR (\"donauschwabisches christentum eine 19\"))".
• Removing quotes may allow a broader search: (( donauschwabischen schrifttum heft 1 ) OR ( donauschwabisches christentum eine 19 )).
• Adding a wildcard symbol may retrieve word variants: (("donauschwabischen schrifttum heft 1") OR ("donauschwabisches christentum eine 19"))*.