Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
chang min » zhang ming, chang mae, chan ming
yan guan » gan guan, yan yuan, yang guang
guan zhi » gua zhi, guang zhe, guan li
hong ghi » zhong zhi, hong g, hong hai
zhi li » zhi ji
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan guan zhi li ((sang minh) or (chang min)) hong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan guan zhi li ((sang minh) OR (chang min)) hong ghi ;*.