Perhaps you should try some spelling variations:
"christian gottlob kruger" » "christian gottlieb kruger", "christian gotthilf kruger", "christian gottlob frege"
"christian gottlob fauser" » "christian gottlieb fauser", "christian gotthilf fauser"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"christian gottlob kruger\") OR (\"christian gottlob fauser\"))".
• Removing quotes may allow a broader search: (( christian gottlob kruger ) OR ( christian gottlob fauser )).
• Adding a wildcard symbol may retrieve word variants: (("christian gottlob kruger") OR ("christian gottlob fauser"))*.