Perhaps you should try some spelling variations:
"johannes heiner muller" » "johannes heike muller", "johannes heller muller", "johannes horner muller"
"johannes der muller" » "johannes de muller", "johannes d muller", "johannes carl muller", "johannes der miller", "johannes der moller", "johannes herr 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 heiner muller"))*.
• Removing quotes may allow a broader search: (( johannes der muller ) or ( johannes heiner muller ))*.