Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
su sach » vu sach
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
x hoi » xa hoi, o hoi, x ho

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)) ty nang x hoi. ((hieu ve) OR (hieu va)) cam luc van hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang x hoi. ((hieu ve) or (hieu va)) cam luc van hanh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty nang x hoi. ((hieu ve) or (hieu va)) cam luc van hanh lai cua tre*.