Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
ban hanh » ban hang
nang ma » tang ma, sang ma, nang cao
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
tu sai » tu san, tu cai, tu lai
tu bai » tu ban, tu bat, te bai
co cua » con cua, ca cua, cong cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sai) or (tu bai)) ky nang ma hoa. hieu cua cac xuc ((va danh) or (ban hanh)) co cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu bai)) ky nang ma hoa. hieu cua cac xuc ((va danh) OR (ban hanh)) co cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (tu bai)) ky nang ma hoa. hieu cua cac xuc ((va danh) or (ban hanh)) co cua tre*.