Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
kang min » kan min, kang minah, kyung min
tang min » chang min, yang mind, tang li
wang hui » wang hua, wang zhi, wang wei
di lu » li lu, yi lu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yao yang di lu ((kang min) or (((tang min) or (sang minh)))) ((tong hui) or (wang hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yao yang di lu ((kang min) OR (((tang min) OR (sang minh)))) ((tong hui) OR (wang hui)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yao yang di lu ((kang min) or (((tang min) or (sang minh)))) ((tong hui) or (wang hui)) ;*.