Perhaps you should try some spelling variations:
qua chay » qua cham, mua chay, qua cay
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, qua ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cua te, cuu tre, cua triet
x hoi » o hoi, x ho, 5 hoi
d cua » de cua, do cua, da cua

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 ky nang ((x hoi) or (xa hoi)). hieu qua chay dua ban anh d cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((x hoi) OR (xa hoi)). hieu qua chay dua ban anh d cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((x hoi) or (xa hoi)). hieu qua chay dua ban anh d cua tre*.