Perhaps you should try some spelling variations:
"johannes dieter muller" » "johannes dietlein muller", "johannes pfister muller", "johannes richter muller", "johannes dietmar muller", "johannes gunter muller", "johannes der muller"
"johannes heiner muller" » "johannes heike muller", "johannes heller muller", "johannes horner muller"
"johannes peter muller" » "johann peter muller", "johannes beutler muller", "johannes pfister muller", "johannes peter koller", "johannes geiger muller", "johannes werner muller"
"johannes peter miller" » "johann peter miller", "johannes beutler miller", "johannes pfister miller", "johannes peter koller", "johannes feuer miller", "johannes der 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 muller") OR ("johannes peter miller"))) OR ("johannes heiner muller")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"johannes dieter muller\") or (((((\"johannes peter muller\") OR (\"johannes peter miller\"))) or (\"johannes heiner muller\"))))".
• Removing quotes may allow a broader search: (( johannes dieter muller ) or ((((( johannes peter muller ) OR ( johannes peter miller ))) or ( johannes heiner muller )))).
• Adding a wildcard symbol may retrieve word variants: (("johannes dieter muller") or ((((("johannes peter muller") OR ("johannes peter miller"))) or ("johannes heiner muller"))))*.