Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
su sach » vu sach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky sang ((mai hoi) OR (xa hoi)). hieu ve cac xuc va hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky sang ((mai hoi) or (xa hoi)). hieu ve cac xuc va hanh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky sang ((mai hoi) or (xa hoi)). hieu ve cac xuc va hanh lai cua tre*.