Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang cai » nang cao, nang tai, nang cap
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
cai hoi » cau hoi, dai hoi, cai hoa
qua cac » cua cac
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
va dinh » van dinh, va kinh, va tinh
lai cua » dai cua, hai cua, lai chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang cai hoi. hieu qua cac luc ((va hanh) or (va dinh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang cai hoi. hieu qua cac luc ((va hanh) OR (va dinh)) lai cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang cai hoi. hieu qua cac luc ((va hanh) or (va dinh)) lai cua triet*.