Perhaps you should try some spelling variations:
"johannes beutler muller" » "johanne butler muller", "johannes kepler muller", "johannes muller muller", "johannes detlef muller"
"johannes der muller" » "johannes de muller", "johannes d muller", "johannes carl muller", "johannes der miller", "johannes der moller", "johannes herr 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 der muller") OR ((("johannes beutler muller") OR ("johann peter muller")))).
• Removing quotes may allow a broader search: (( johannes der muller ) or ((( johannes beutler muller ) or ( johann peter muller )))).
• Adding a wildcard symbol may retrieve word variants: (("johannes der muller") or ((("johannes beutler muller") or ("johann peter muller"))))*.