Perhaps you should try some spelling variations:
vien chao » vien cao, vien cheo, vien cho
hieu vien » hieu hien, hieu viec, thieu nien
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
xu van » tu van, vu van, su van

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((ma hoi) or (xa hoi)). hieu vien chao xu van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((ma hoi) OR (xa hoi)). hieu vien chao xu van hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((ma hoi) or (xa hoi)). hieu vien chao xu van hanh lai cua tre*.