Perhaps you should try some spelling variations:
thuat san » thuat song, thuat lanh, thuat xay
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
lai cua » dai cua, hai cua, lai chau
cham lo » cham o, cham soc, cham hoi
hieu ve » hieu va, hieu van
may hoi » may thoi, tay hoi, mai hoi
ty mang » ty xang, ty hang, tin mang
cua tre » cua te, cuu tre, cua triet
cam lo » nam lo, cam ly, cam o

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