Perhaps you should try some spelling variations:
johannes dieter » johannes dietlein, johannes pfister, johannes richter
johannes peter » johann peter, johannes beutler, johannes pfister
dieter muller » dietmar muller, peter muller, gunter muller
peter miller » peter muller, peter koller, feuer miller

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 dieter muller ) OR ( johannes peter miller )).
• Adding a wildcard symbol may retrieve word variants: (( johannes dieter muller ) or ( johannes peter miller ))*.