Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
su sach » vu sach
vai cua » dai cua, hai cua, lai cua
xa hanh » xa thanh, xa khanh, va hanh
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
so sach » so sanh, bo sach, co sach
va cao » va cac, va co, va dao
duc xa » duoc xa, tuc xa, duc va

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: ((su sach) OR (so sach)) ky ((nang ma) OR (sang ma)) hoi. hieu va cao duc xa hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky ((nang ma) OR (sang ma)) hoi. hieu va cao duc xa hanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky ((nang ma) OR (sang ma)) hoi. hieu va cao duc xa hanh vai cua tre*.