Perhaps you should try some spelling variations:
"christian gottlieb frage" » "christoph gottlieb frage", "christian gottlieb roger", "christian gottlieb francken", "christian gottlieb forster"
"christian gottlob frage" » "christian gotthilf frage", "christian gottlob kruger"
"christian gottlob frege" » "christian gotthilf frege", "christian gottlob freie"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("christian gottlob frage") OR ("christian gottlieb frage"))) OR ("christian gottlob frege")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"christian gottlob frage\") OR (\"christian gottlieb frage\"))) or (\"christian gottlob frege\"))".
• Removing quotes may allow a broader search: (((( christian gottlob frage ) OR ( christian gottlieb frage ))) or ( christian gottlob frege )).
• Adding a wildcard symbol may retrieve word variants: (((("christian gottlob frage") OR ("christian gottlieb frage"))) or ("christian gottlob frege"))*.