Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu xang » ty xang, tu lang, tu quang
hieu ve » hieu va, hieu van
luc van » luoc van, luu van, luc va
duc van » duc va, duc tan, duc manh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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

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