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