Perhaps you should try some spelling variations:
"heinrich hein" » "hinrich hin" (Expand Search), "veinrich vein" (Expand Search), "hsinrich hsin" (Expand Search)
"enrich heinz" » "enrich hinz" (Expand Search), "enrich veinz" (Expand Search), "enrich hsinz" (Expand Search)
"enriched heinz" » "enriched hinz" (Expand Search), "enriched veinz" (Expand Search), "enriched hsinz" (Expand Search)
"enrich hinz" » "enrich hinze" (Expand Search), "enrich hin" (Expand Search), "enrich hing" (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 hein") OR ((((("enrich heinz") OR ("enrich hinz"))) OR ("enriched heinz"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"heinrich hein\") OR (((((\"enrich heinz\") OR (\"enrich hinz\"))) OR (\"enriched heinz\"))))*".
• Removing quotes may allow a broader search: (( heinrich hein ) OR ((((( enrich heinz ) OR ( enrich hinz ))) OR ( enriched heinz ))))*.