Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu
x hoi » o hoi, x ho, 5 hoi

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: tu sach thu nang ((x hoi) OR (xa hoi)). hieu qua cham xuc ban anh d ((cua tre) OR (cua te))~.
• Adding a wildcard symbol may retrieve word variants: tu sach thu nang ((x hoi) or (xa hoi)). hieu qua cham xuc ban anh d ((cua tre) or (cua te))*.