Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
duoc ban » duc ban, quoc ban, buoc ban
thanh ca » thanh cha, thanh cac, thanh ha
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va nam » van nam, ha nam
va nay » va ngay, va cay
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky sang ma hoi. lieu ((va nam) or (va nay)) duoc ban thanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky sang ma hoi. lieu ((va nam) OR (va nay)) duoc ban thanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: co sach ky sang ma hoi. lieu ((va nam) or (va nay)) duoc ban thanh ca cua tre*.