Perhaps you should try some spelling variations:
thien van » thi van
hac thua » bac thua, hoc thuat, cac thuat
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
thua va » thuat va, chua va, thuat vat
van hac » van hoc, van ha, van hai
so sach » bo sach, co sach, hoc sach
va nang » van nang, da nang, cam nang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hai

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: ((so sach) OR (so sanh)) va nang o hoi. thien van hac thua va hanh di cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) va nang o hoi. thien van hac thua va hanh di cua tre*.