Perhaps you should try some spelling variations:
"johannes beutler muller" » "johanne butler muller", "johannes kepler muller", "johannes muller muller", "johannes peter muller", "johannes detlef muller"
"johannes dieter muller" » "johannes dietlein muller", "johannes pfister muller", "johannes richter muller", "johannes dietmar muller", "johannes peter muller", "johannes gunter muller"
"johannes heiner muller" » "johannes heike muller", "johannes heller muller", "johannes horner 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 beutler muller") OR ("johannes dieter muller"))) OR ("johannes heiner muller")).
• Removing quotes may allow a broader search: (((( johannes beutler muller ) or ( johannes dieter muller ))) or ( johannes heiner muller )).
• Adding a wildcard symbol may retrieve word variants: (((("johannes beutler muller") or ("johannes dieter muller"))) or ("johannes heiner muller"))*.