Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
dang mat » dang vat, dang mau, dang hat
dung mat » duong mat, dung dat, dung may
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
dua ban » dia ban, qua ban, mua ban
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
va ca » va cac, va cao, va cai

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 ((dang mat) or (dung mat)) hoa. hieu va ca ((dua ban) or (cua ban)) thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang mat) OR (dung mat)) hoa. hieu va ca ((dua ban) OR (cua ban)) thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang mat) or (dung mat)) hoa. hieu va ca ((dua ban) or (cua ban)) thanh vai cua tre*.