Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yang den » yang dean, gang der, yang di
song yue » wong yue, song yun, hong yu
di rene » dr rene, i rene, ii rene
yang li » yang lin, yang di, yang xi
li song » li cong, li rong, kim song
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 yang) or (yang den)) ((di rene) OR (di rete)) yang li song yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yang) OR (yang den)) ((di rene) OR (di rete)) yang li song yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang yang) or (yang den)) ((di rene) OR (di rete)) yang li song yue ;*".