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