Perhaps you should try some spelling variations:
"heinrich heinz" » "enrich heinz" (Expand Search)
"heinrich hein" » "enrich hein" (Expand Search)
"hinrichs hsinz" » "hindrichs hsinz" (Expand Search), "henrich hsinz" (Expand Search), "hinsicht hsinz" (Expand Search), "hinrichs hsin" (Expand Search), "hinrichs hsing" (Expand Search), "henrichs hsinz" (Expand Search), "hindrichss hsinz" (Expand Search), "zheinrichs hsinz" (Expand Search), "thinrichs hsinz" (Expand Search), "chinrichs hsinz" (Expand Search)
"hinrich hin" » "henrich hin" (Expand Search), "hindrichs hin" (Expand Search), "zheinrich hin" (Expand Search), "thinrich thin" (Expand Search), "chinrich chin" (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 ("hinrichs hsinz"))) OR ((("heinrich hein") OR ("hinrich hin"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heinrich heinz\") OR (\"hinrichs hsinz\"))) OR (((\"heinrich hein\") OR (\"hinrich hin\"))))".
• Removing quotes may allow a broader search: (((( heinrich heinz ) OR ( hinrichs hsinz ))) OR ((( heinrich hein ) OR ( hinrich hin )))).
• Adding a wildcard symbol may retrieve word variants: (((("heinrich heinz") OR ("hinrichs hsinz"))) OR ((("heinrich hein") OR ("hinrich hin"))))*.