Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
nhanh va » hanh va, nhan va, nhanh ha
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam tu
tu day » tu duy, tu dat, tu cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x ho. hieu va cam tu day nhanh va ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x ho. hieu va cam tu day nhanh va ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. hieu va cam tu day nhanh va ((cuu tre) or (cua tre))*.