Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
sang ma » nang ma, sang tao, mang may
ca dua » cay dua, ca da, ca lua
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: tu sach ky ((sang ma) or (tang ma)) hoa. hieu va ((ca dua) OR (ca cua)) ban thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((sang ma) OR (tang ma)) hoa. hieu va ((ca dua) OR (ca cua)) ban thanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((sang ma) or (tang ma)) hoa. hieu va ((ca dua) OR (ca cua)) ban thanh vai cua tre*".