Perhaps you should try some spelling variations:
enrich » enriched (Expand Search)
heiz\" » heitz\" (Expand Search), hei\" (Expand Search), heis\" (Expand Search)
heinrich » veinrich (Expand Search), hsinrich (Expand Search), heirich (Expand Search)
heinz\" » veinz\" (Expand Search), hsinz\" (Expand Search), heiz\" (Expand Search)
hein\" » vein\" (Expand Search), hsin\" (Expand Search), hei\" (Expand Search)
hin\" » thin\" (Expand Search)
chin\" » cthin\" (Expand Search), china\" (Expand Search), chain\" (Expand Search), chian\" (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 OR enrich) ((heinz\\" OR heiz\\") OR (hein\\" OR (hin\\" OR chin\\")))~\"".
• Removing quotes may allow a broader search: (heinrich OR enrich) ((heinz OR heiz ) OR (hein OR (hin OR chin )))~.