Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, dua tren
su cac » tu cac, su cao, su can
ve cao » va cao, ve bao, ve cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang x hoi. hieu ve cao duc ban thanh san ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang x hoi. hieu ve cao duc ban thanh san ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su cac ky nang x hoi. hieu ve cao duc ban thanh san ((cua tre) or (cua triet))*.