Perhaps you should try some spelling variations:
"johannes pfister muller" » "johanne foster muller", "johannes dieter muller", "johannes fischer muller", "johannes pfisters muhle", "johannes pachter muller"
"johann peter muller" » "johann peter miller", "johann peter koller", "johann heiner muller"

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 muller") OR ("johann peter muller"))*.
• Removing quotes may allow a broader search: (( johannes pfister muller ) or ( johann peter muller ))*.