Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
dinh vai » dinh van, dinh vi, dinh va
mai hoi » mai khoi, dai hoi, lai hoi
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai
sai ky » sac ky
ma hoi » xa hoi, ma hoa, me hoi
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang ((ma hoi) OR (mai hoi)). hieu viec cac lo va dinh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang ((ma hoi) OR (mai hoi)). hieu viec cac lo va dinh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang ((ma hoi) OR (mai hoi)). hieu viec cac lo va dinh vai cua tre*.