Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
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: thu sach ty xang ((ma hoi) or (xa hoi)). hieu ve cac ((xuc van) or (duc manh)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang ((ma hoi) OR (xa hoi)). hieu ve cac ((xuc van) OR (duc manh)) hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang ((ma hoi) or (xa hoi)). hieu ve cac ((xuc van) or (duc manh)) hanh lai cua tre*.