Perhaps you should try some spelling variations:
kang minh » kang minah, kan min, tang min
sang minh » kang minah, song min, song ming
wang dan » wang yan, wang yidan, wang yang
wang ban » wang yan, wang yang, bang bang
yang li » yang lin, yang di, yang xi
li li » li lin, li l, li lu
cong » congo, long, hong

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 dan) OR (wang ban)) yang li li ((kang minh) OR (((sang minh) OR (anh minh)))) cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang dan) or (wang ban)) yang li li ((kang minh) or (((sang minh) OR (anh minh)))) cong shu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang dan) or (wang ban)) yang li li ((kang minh) or (((sang minh) OR (anh minh)))) cong shu ;*.