Perhaps you should try some spelling variations:
kang minh » kang minah, anh minh, kan min
sang minh » kang minah, anh minh, song min
wang dan » wang yan, wang yidan, wang yang
wang ban » wang yan, wang yang, bang bang
long shu » cong shu, tong shui, long du
yang li » yang lin, yang di, yang xi
li li » li lin, li l, li lu

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)) long shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang dan) or (wang ban)) yang li li ((kang minh) or (sang minh)) long shu ;*.