Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
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

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 (thuoc sach)) ky lang xa hoi. hieu va cac xuc ((ban hanh) or (va thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) ky lang xa hoi. hieu va cac xuc ((ban hanh) OR (va thanh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) ky lang xa hoi. hieu va cac xuc ((ban hanh) or (va thanh)) vai cua tre*.