Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang wang » yang yang, yan wang, yang guang
tan cheng » tang zheng, yuan cheng, tan hong
tang ming » zhang ming, sang minh, song ming
zhong zhi » zhang zhi, hong ghi, zhong tai
wang tan » wang yan, wang ban, wang dan
tang min » chang min, sang minh, yang mind

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 wang tan cheng ((tang min) OR (tang ming)) zhong zhi ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang wang tan cheng ((tang min) or (tang ming)) zhong zhi ;*.