Perhaps you should try some spelling variations:
xay hanh » day nhanh, day thanh, xanh hanh
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
hanh va » hang va, hanh vi
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
cam tu » cam thu, nam tu, dam tu

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 va ((cuu tre) OR (cua 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 va ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. hieu van cam tu xay hanh va ((cuu tre) OR (cua tre))*.