Perhaps you should try some spelling variations:
"donauschwabisches christentum heft 1" » "donauschwabisches schrifttum heft 1" (Expand Search), "dopnauschwabisches schrifttum heft 1" (Expand Search), "donauschwabisches christentum der 1" (Expand Search), "donauschwabisches christentum eine 1" (Expand Search), "donauschwabisches christentum heft 3" (Expand Search)
"donauschwabischen schrifttum heft 10" » "donauschwabisches schrifttum heft 10" (Expand Search), "dopnauschwabisches schrifttum heft 10" (Expand Search), "donauschwabischen geschichte heft 10" (Expand Search), "donauschwabischen schrifttum heft 12" (Expand Search), "donauschwabischen schrifttum heft 19" (Expand Search), "donauschwabischen schrifttum heft 30" (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 schrifttum heft 10") OR ("donauschwabisches christentum heft 1"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"donauschwabischen schrifttum heft 10\") OR (\"donauschwabisches christentum heft 1\"))".
• Removing quotes may allow a broader search: (( donauschwabischen schrifttum heft 10 ) OR ( donauschwabisches christentum heft 1 )).
• Adding a wildcard symbol may retrieve word variants: (("donauschwabischen schrifttum heft 10") OR ("donauschwabisches christentum heft 1"))*.