Perhaps you should try some spelling variations:
johannes pfister » johanne foster, johannes dieter, johannes fischer
johannes liesche » johannes fischer, johannes basch, johannes bosscha
johannes berchem » johannes becker, johannes berger, johannes bechteln

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