Perhaps you should try some spelling variations:
"donauschwabisches christentum nr. 23" » "donauschwabisches schrifttum nr. 23" (Expand Search), "dopnauschwabisches schrifttum nr. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search), "donauschwabisches christentum eine. 23" (Expand Search)
"donauschwabischen geschichte nr. 23" » "donauschwabischen geschichte n. 23" (Expand Search), "donauschwabischen geschichte der. 23" (Expand Search), "donauschwabischen geschichte und. 23" (Expand Search), "donauschwabische geschichte nr. 23" (Expand Search), "donauschwaben geschichte nr. 23" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("donauschwabischen geschichte nr. 23") OR ("donauschwabisches christentum nr. 23"))~.
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• Adding a wildcard symbol may retrieve word variants: (("donauschwabischen geschichte nr. 23") OR ("donauschwabisches christentum nr. 23"))*.