Perhaps you should try some spelling variations:
"heinrich heinz" » "enrich heinz" (Expand Search)
"hsinrich hsinz" » "zheinrich hsinz" (Expand Search), "henrich hsinz" (Expand Search), "hinrichs hsinz" (Expand Search), "hsinrich hsing" (Expand Search), "hsinnreich hsinz" (Expand Search), "hgingrich hsinz" (Expand Search), "hhinrichs hsinz" (Expand Search), "hskinrich hskinz" (Expand Search), "hspinrich hspinz" (Expand Search)
"hsinrich hsin" » "zheinrich hsin" (Expand Search), "henrich hsin" (Expand Search), "hinrichs hsin" (Expand Search), "hsinnreich hsin" (Expand Search), "hgingrich hsin" (Expand Search), "hhinrichs hsin" (Expand Search), "hskinrich hskin" (Expand Search), "hspinrich hspin" (Expand Search)
"sinrich sin" » "sinnreich sin" (Expand Search), "gingrich sin" (Expand Search), "hinrichs sin" (Expand Search), "skinrich skin" (Expand Search), "spinrich spin" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("heinrich heinz") OR ("hsinrich hsinz"))) OR ((("hsinrich hsin") OR ("sinrich sin"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heinrich heinz\") OR (\"hsinrich hsinz\"))) OR (((\"hsinrich hsin\") OR (\"sinrich sin\"))))".
• Removing quotes may allow a broader search: (((( heinrich heinz ) OR ( hsinrich hsinz ))) OR ((( hsinrich hsin ) OR ( sinrich sin )))).
• Adding a wildcard symbol may retrieve word variants: (((("heinrich heinz") OR ("hsinrich hsinz"))) OR ((("hsinrich hsin") OR ("sinrich sin"))))*.