Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
xay hanh » day thanh, xanh hanh, xuan hanh
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cuu tre » cua tre, cau tren, cau treo
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
cam tu » cam thu, nam tu, dam tu
va cuu » va cau, va chu, va huu

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 van cam tu ((xay hanh) OR (day nhanh)) va cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x ho. hieu van cam tu ((xay hanh) OR (day nhanh)) va cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. hieu van cam tu ((xay hanh) OR (day nhanh)) va cuu tre*.