Perhaps you should try some spelling variations:
yang fan » zhang fan, yang dean, yang yang
yang den » yang dean, gang der, yang jin
wong yue » wang yue, hong yu
di rene » dr rene, i rene, ii rene
yang li » yang lin, yang xi, yang yi
li wong » li cong, li rong, li song
rete » crete, grete, rente

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang fan) OR (((yang den) OR (yang di)))) ((di rene) OR (di rete)) yang li wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang fan) or (((yang den) or (yang di)))) ((di rene) or (di rete)) yang li wong yue ;*.