Perhaps you should try some spelling variations:
johannes bosscha » johannes basch, johannes liesche
johannes pfister » johanne foster, johannes fischer, johannes koster
johannes dieter » johannes dietlein, johannes richter, johannes der
johanna fischer » johannes fischer, johan fischer, johann fischart

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: ((((((johannes pfister) OR (((johannes dieter) OR (johannes fuchs))))) OR (johanna fischer))) OR (johannes bosscha)).
• Adding a wildcard symbol may retrieve word variants: ((((((johannes pfister) or (((johannes dieter) or (johannes fuchs))))) or (johanna fischer))) or (johannes bosscha))*.