Perhaps you should try some spelling variations:
"johann gottfried haber" » "johann gottfried hagen", "johann gottfried haberler", "johann gottfried grabner"
"johann gottfried kate" » "johann gottfried peter", "johann gottfried hagen", "johann gottfried e"
"johann gottfried karl" » "johann gottfried kurt", "johann gottfried lara", "johann gottfried paul"

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: (((((("johann gottfried kate") OR ("johann gottfried karl"))) OR ("johann gottfried haber"))) OR ("johann gottlieb fichte")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"johann gottfried kate\") OR (\"johann gottfried karl\"))) or (\"johann gottfried haber\"))) or (\"johann gottlieb fichte\"))".
• Removing quotes may allow a broader search: (((((( johann gottfried kate ) OR ( johann gottfried karl ))) or ( johann gottfried haber ))) or ( johann gottlieb fichte )).
• Adding a wildcard symbol may retrieve word variants: (((((("johann gottfried kate") OR ("johann gottfried karl"))) or ("johann gottfried haber"))) or ("johann gottlieb fichte"))*.