Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cua tre » cua te, cuu tre, cua triet
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
luc van » luoc van, luu van, luc va
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
mai hoi » mai khoi, dai hoi, lai hoi
san ky » sang ky, van ky, dan ky
ma hoi » xa hoi, ma hoa, me hoi
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((ma hoi) or (mai hoi)). hieu va tham ((luc van) OR (duc van)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((ma hoi) OR (mai hoi)). hieu va tham ((luc van) OR (duc van)) hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((ma hoi) or (mai hoi)). hieu va tham ((luc van) OR (duc van)) hanh lai cua tre*".