Perhaps you should try some spelling variations:
ban banh » ban anh, ban danh, ban thanh
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
ban dan » ban hang, ban quan, gian dan
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu va cam xuc ((ban banh) or (((ban dan) OR (ban hanh)))) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu va cam xuc ((ban banh) OR (((ban dan) OR (ban hanh)))) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu va cam xuc ((ban banh) or (((ban dan) OR (ban hanh)))) vi cua tre*".