Perhaps you should try some spelling variations:
"heinrich manns" » "heinrich maxns", "heinrich maikns", "heinrich marxns", "heinrich manys", "heinrich mains", "heinrich kanns"
"heinrich mann" » "heinrich maxn", "heinrich maikn", "heinrich marxn", "heinrich many", "heinrich main", "heinrich kann"
"heinrich man" » "heinrich max", "heinrich maik", "heinrich marx"

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: (((("heinrich manns") OR ("heinrich mann"))) OR ("heinrich man"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heinrich manns\") OR (\"heinrich mann\"))) or (\"heinrich man\"))*".
• Removing quotes may allow a broader search: (((( heinrich manns ) OR ( heinrich mann ))) or ( heinrich man ))*.