Perhaps you should try some spelling variations:
"heinrich heinz" » "enrich heinz" (Expand Search)
"hinrich hin" » "henrich hin" (Expand Search), "hindrichs hin" (Expand Search), "zheinrich hin" (Expand Search)
"hinrichs hin" » "henrichs hin" (Expand Search), "hindrichss hin" (Expand Search), "zheinrichs hin" (Expand Search), "hindrichs hin" (Expand Search), "henrich hin" (Expand Search), "hinsicht hin" (Expand Search)
"thinrich thin" » "thenrich thin" (Expand Search), "thindrichs thin" (Expand Search), "tzheinrich thin" (Expand Search), "zheinrich thin" (Expand Search), "henrich thin" (Expand Search), "thanrich than" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"heinrich heinz\") OR (((((\"hinrich hin\") OR (\"hinrichs hin\"))) OR (\"thinrich thin\"))))~".
• Removing quotes may allow a broader search: (( heinrich heinz ) OR ((((( hinrich hin ) OR ( hinrichs hin ))) OR ( thinrich thin ))))~.
• Adding a wildcard symbol may retrieve word variants: (("heinrich heinz") OR ((((("hinrich hin") OR ("hinrichs hin"))) OR ("thinrich thin"))))*.