Perhaps you should try some spelling variations:
"heinrich heinz" » "enrich heinz" (Expand Search)
"hsinrich hsinz" » "zheinrich hsinz" (Expand Search), "hinrichs hsinz" (Expand Search), "hsinrich hsing" (Expand Search), "hsienrich hsienz" (Expand Search), "sinrich sinz" (Expand Search), "hinrich hinz" (Expand Search)
"hsinrich hsin" » "zheinrich hsin" (Expand Search), "hinrichs hsin" (Expand Search), "hsienrich hsien" (Expand Search), "sinrich sin" (Expand Search), "hinrich hin" (Expand Search)
"henrich hsinz" » "henrich hsing" (Expand Search), "henrich hsienz" (Expand Search), "henrich sinz" (Expand Search), "henrich hinz" (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 ("henrich hsinz"))))) OR ("hsinrich hsin"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heinrich heinz\") OR (((\"hsinrich hsinz\") OR (\"henrich hsinz\"))))) OR (\"hsinrich hsin\"))".
• Removing quotes may allow a broader search: (((( heinrich heinz ) OR ((( hsinrich hsinz ) OR ( henrich hsinz ))))) OR ( hsinrich hsin )).
• Adding a wildcard symbol may retrieve word variants: (((("heinrich heinz") OR ((("hsinrich hsinz") OR ("henrich hsinz"))))) OR ("hsinrich hsin"))*.