Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
hua rene » hua ren, juan rene
rene yan » ren yan, rene ten, see yan
hong ghi » zhong zhi, hong g, hong hai
yan thi » yan zhi, tran thi, dang thi
hong yu » wong yue
sin » sign, sind, skin

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) OR (yang yang))) OR (dong sin)) ya hua rene yan thi ((hong ghi) OR (hong yu)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (yang yang))) or (dong sin)) ya hua rene yan thi ((hong ghi) or (hong yu)) ;*.