Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, te sach, tu cach
cac xuc » cam xuc, cac nuoc, chat xuc
vai cua » dai cua, hai cua, lai cua
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
xang xa » lang xa, mang xa, ang xa
su sach » so sach, vu sach
y xang » ty xang
ve cac » va cac, vien cac

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) OR (su sach)) y xang xa hoi. hieu ve cac xuc ((va dinh) or (ban hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y xang xa hoi. hieu ve cac xuc ((va dinh) OR (ban hanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y xang xa hoi. hieu ve cac xuc ((va dinh) or (ban hanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y xang xa hoi. hieu ve cac xuc ((va dinh) or (ban hanh)) vai cua tre*.