Perhaps you should try some spelling variations:
johannes pfister » johanne foster, johannes dieter, johannes fischer
johannes liesche » johannes fischer, johannes basch, johannes berchem
johan richter » john richter, johannes richter, von richter

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 (johan richter))) OR (johannes liesche)).
• Adding a wildcard symbol may retrieve word variants: ((((johannes pfister) or (johan richter))) or (johannes liesche))*.