Perhaps you should try some spelling variations:
"johannes dietlein muller" » "johannes blumlein muller", "johannes detlef muller"
"johannes pfister muller" » "johanne foster muller", "johannes fischer muller", "johannes koster muller", "johannes peter muller", "johannes pfisters muhle", "johannes pachter muller"
"johannes dieter muller" » "johannes richter muller", "johannes der muller", "johannes ditz 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 pfister muller") OR ((("johannes dieter muller") OR ("johannes dietlein muller"))))) OR ("johannes heiner muller")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"johannes pfister muller\") or (((\"johannes dieter muller\") OR (\"johannes dietlein muller\"))))) or (\"johannes heiner muller\"))".
• Removing quotes may allow a broader search: (((( johannes pfister muller ) or ((( johannes dieter muller ) OR ( johannes dietlein muller ))))) or ( johannes heiner muller )).
• Adding a wildcard symbol may retrieve word variants: (((("johannes pfister muller") or ((("johannes dieter muller") OR ("johannes dietlein muller"))))) or ("johannes heiner muller"))*.