Perhaps you should try some spelling variations:
"dopnauschwabisches schrifttum heft 19" » "donauschwabisches schrifttum heft 19" (Expand Search), "donauschwabisches christentum heft 19" (Expand Search), "dopnauschwabisches schrifttum heft 1" (Expand Search), "dopnauschwabisches schrifttum heft 9" (Expand Search), "dopnauschwabisches schrifttum heft 10" (Expand Search)
"donauschwabischen schrifttum heft 12" » "donauschwabisches schrifttum heft 12" (Expand Search), "donauschwabisches christentum heft 12" (Expand Search), "donauschwabischen geschichte heft 12" (Expand Search), "donauschwabischen schrifttum heft 1" (Expand Search), "donauschwabischen schrifttum heft 2" (Expand Search), "donauschwabischen schrifttum heft 10" (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: (("dopnauschwabisches schrifttum heft 19") OR ("donauschwabischen schrifttum heft 12"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dopnauschwabisches schrifttum heft 19\") OR (\"donauschwabischen schrifttum heft 12\"))*".
• Removing quotes may allow a broader search: (( dopnauschwabisches schrifttum heft 19 ) OR ( donauschwabischen schrifttum heft 12 ))*.