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

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu va cam xuc ((((ban banh) OR (ban thanh))) OR (ban danh)) vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu va cam xuc ((((ban banh) OR (ban thanh))) or (ban danh)) vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu va cam xuc ((((ban banh) OR (ban thanh))) or (ban danh)) vi cua tre*.