Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
ma hoi » mai hoi, ma hoa, me hoi
va cao » va cac, va co, va dao
vi cua » vai cua, di cua

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

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