Perhaps you should try some spelling variations:
sang tao » hang tai
ban hanh » ban hang
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
ban anh » ban banh, ban danh, bang anh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
cuu tre » cau tren, cau treo

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 tao boi. hieu va cham duc ((ban anh) or (ban hanh)) di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang tao boi. hieu va cham duc ((ban anh) OR (ban hanh)) di ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang tao boi. hieu va cham duc ((ban anh) or (ban hanh)) di ((cua tre) or (cuu tre))*.