Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
va thanh » gia thanh, ban thanh, va tinh
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, te sach, tu cach
lam cua » nam cua, lam chat
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
ty tang » tay tang, ty xang, ty hang
su sach » so sach, vu sach

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 (su sach)) ty tang ((mai hoi) OR (lai hoi)). hieu vu cham duc va thanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty tang ((mai hoi) OR (lai hoi)). hieu vu cham duc va thanh lam cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ty tang ((mai hoi) OR (lai hoi)). hieu vu cham duc va thanh lam cua tre*".