Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
cuu tre » cau tren, cau treo
bay dia » ban dia, tay dia
sach ky » sac ky, sach y, sach kem
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
ma hoi » mai hoi, xa hoi, ma hoa
va bay » van bay, va bai, va bao

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) or (sach ty)) sang ma hoi. hieu va bay dia ban thanh vai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) sang ma hoi. hieu va bay dia ban thanh vai ((cuu tre) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach ty)) sang ma hoi. hieu va bay dia ban thanh vai ((cuu tre) OR (cua tre))*".