Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
va thanh » gia thanh, ban thanh, va tinh
cham duc » pham duc, cham soc, pham duy
mai hoi » mai khoi, dai hoi, lai hoi
lap cua » lai cua, tap cua, lam cua
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
so sach » bo sach, co sach, hoc sach
ty hang » ly hang, ty xang, thi hang
ty tang » tay tang, ty xang, ky tang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (so sanh)) ((ty tang) or (ty hang)) mai hoi. hieu vu cham duc va thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ((ty tang) OR (ty hang)) mai hoi. hieu vu cham duc va thanh lap cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ((ty tang) or (ty hang)) mai hoi. hieu vu cham duc va thanh lap cua tre*".