Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
ban thanh » ban hanh, ban hang
thien van » thi van
thai cua » than cua, tai cuc, tri cua
sach kem » hanh kem
duoc ban » duc ban, quoc ban, buoc ban
nam duoc » nam thuoc, da duoc, dat duoc
sach hay » sach han, sach ha, sach nay
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
sac ky » cac ky, sai ky
o hoi » co hoi, o hoc, o hai

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 hay) or (sach kem))) or (sac ky)) nang o hoi. thien van nam duoc ban thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach hay) OR (sach kem))) OR (sac ky)) nang o hoi. thien van nam duoc ban thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach hay) or (sach kem))) or (sac ky)) nang o hoi. thien van nam duoc ban thanh thai cua tre*.