Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cham luc » cham soc, nhan luc, cham cuu
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
luc van » luoc van, luu van, duc van
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
can ky » van ky, dan ky, ban ky
ma hoi » ma hoa, me hoi, va hoi
tu can » tu ban, tu cac, thu canh

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

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