Perhaps you should try some spelling variations:
thuoc ban » thuoc tan, thuoc dang, thuoc ma
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
nang xa » nang x, lang xa, nang ma
hieu ha » hieu hoa, hieu va, hieu ca
thu ban » thu hang
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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: su sac ky nang xa hoi. hieu ha nam ((thuoc ban) OR (thu ban)) hanh lai ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ha nam ((thuoc ban) OR (thu ban)) hanh lai ((cua triet) or (va triet))~".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ha nam ((thuoc ban) OR (thu ban)) hanh lai ((cua triet) or (va triet))*.