Perhaps you should try some spelling variations:
cua viet » hoa viet, cua vat, cua dieu
nam thuc » nam thuoc, am thuc, nam thu
ca viet » va viet, co viet, hoa viet
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu le » hieu he, hieu ly, tieu le
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
thuc va » thuc vat, thuc dan, thuc day
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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 ma hoi. ((hieu le) or (hieu ve)) nam thuc va hanh di ((cua viet) OR (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky sang ma hoi. ((hieu le) OR (hieu ve)) nam thuc va hanh di ((cua viet) OR (ca viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky sang ma hoi. ((hieu le) or (hieu ve)) nam thuc va hanh di ((cua viet) OR (ca viet))*".