Perhaps you should try some spelling variations:
yang yan » yang yang, wang yan, yang fan
yang den » yang dean, gang der, yang di
yang jin » yang jie, yang jun, ying jin
wong yue » wang yue, hong yu
di rene » dr rene, i rene, ii rene
yang xi » yang di, yang yi, yang jui
rete » crete, grete, rente

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang yan) or (yang den)) ((di rene) OR (di rete)) ((yang xi) or (yang jin)) wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yan) OR (yang den)) ((di rene) OR (di rete)) ((yang xi) OR (yang jin)) wong yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang yan) or (yang den)) ((di rene) OR (di rete)) ((yang xi) or (yang jin)) wong yue ;*".