Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nam thuc » nam thuoc, am thuc, nam thu
sang tay » sang tao, sang tai, sang tac
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
hieu ve » hieu va, hieu van
hieu le » hieu he, hieu ly, tieu le
tay hoi » tay ho, tao hoi, tay thai
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky sang tay hoi. ((hieu le) or (hieu ve)) nam thuc ((va hanh) or (va danh)) dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky sang tay hoi. ((hieu le) OR (hieu ve)) nam thuc ((va hanh) OR (va danh)) dai cua viet.
• Adding a wildcard symbol may retrieve word variants: su sac ky sang tay hoi. ((hieu le) or (hieu ve)) nam thuc ((va hanh) or (va danh)) dai cua viet*.