Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
nang ma » tang ma, sang ma, nang cao
cua tre » cuu tre, cua triet, dua tren
cac xuc » cam xuc, cac nuoc, chat xuc
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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 sai ky nang ma hoi. hieu cua cac xuc ((va danh) OR (va hanh)) ca ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) or (va hanh)) ca ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. hieu cua cac xuc ((va danh) or (va hanh)) ca ((cua tre) OR (cua te))*.