Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cham hoi » cham voi, cham h'roi, pham hoai
van hanh » van thanh, ban hanh, van anh
ty mang » ty xang, ty hang, tin mang
may hoi » may thoi, tay hoi, mai hoi
hieu va » lieu va, hieu qua
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
san ty » san tay, van ty
cam lo » nam lo, cam ly, cam o
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ty mang may hoi. hieu va ((cham hoi) or (cam lo)) van hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ty mang may hoi. hieu va ((cham hoi) OR (cam lo)) van hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat san ty mang may hoi. hieu va ((cham hoi) or (cam lo)) van hanh va cua tre*.