Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
va danh » va dinh, va hanh, dia danh
nang co » nang cao, nang doc, nang noi
lai cua » dai cua, hai cua, lai chau
hieu va » lieu va
va dan » ca dan, va dao, va dau
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
co loi » co hoi

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: tu sac ky nang co loi. ((hieu va) OR (hieu qua)) am thuc ((va danh) OR (va dan)) lai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang co loi. ((hieu va) or (hieu qua)) am thuc ((va danh) OR (va dan)) lai cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang co loi. ((hieu va) or (hieu qua)) am thuc ((va danh) OR (va dan)) lai cua viet*.