Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ly » thanh lay, thanh ky, thanh le
luoc van » luoc can, luoc va, luc van
van cam » van lam, van cau, van dam
te sach » toc sach
doc hai » hoc hai, duc hai, do hai
doc hoi » duoc hoi, hoc hoi, doi hoi
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ly cua » le cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v nang ((doc hoi) OR (doc hai)). hieu ((van cam) or (van nam)) luoc van thanh ly cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((doc hoi) OR (doc hai)). hieu ((van cam) OR (van nam)) luoc van thanh ly cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang ((doc hoi) OR (doc hai)). hieu ((van cam) or (van nam)) luoc van thanh ly cua tre*".