Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
su sach » so sach, vu sach
dua ban » dia ban, cua ban, mua ban
vai cua » dai cua, hai cua, lai cua
qua ban » cua ban, qua quan
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, mang may
cua tre » cua te, cuu tre, cua triet
va lam » van lam, va lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang ma) or (nang cao)) hoa. lieu va lam ((dua ban) or (qua ban)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang ma) OR (nang cao)) hoa. lieu va lam ((dua ban) OR (qua ban)) thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang ma) or (nang cao)) hoa. lieu va lam ((dua ban) or (qua ban)) thanh vai cua tre*.