Perhaps you should try some spelling variations:
ban hanh » ban hang
va thanh » ban thanh, va tinh, le thanh
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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 lang xa hoi. hieu va cac xuc ((ban hanh) or (((va thanh) OR (gia thanh)))) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu va cac xuc ((ban hanh) OR (((va thanh) OR (gia thanh)))) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang xa hoi. hieu va cac xuc ((ban hanh) or (((va thanh) OR (gia thanh)))) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu va cac xuc ((ban hanh) or (((va thanh) OR (gia thanh)))) vi cua tre*.