Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
kang minh » kang minah, anh minh, kan min
yan ying » fan ying, ran ying, tan ying
ying qin » ying jin, ming qing, ding qi
wai yan » wang yan, wei yang
cong du » long du, cong shu, cong sun
qin yi » qian yi, lin yi, qi yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wai yan ying qin yi ((kang minh) or (sang minh)) cong du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wai yan ying qin yi ((kang minh) OR (sang minh)) cong du ;*.