Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
sach duoc » sach nuoc, sach dao, sach dung
va thanh » gia thanh, ban thanh, va tinh
cham duc » pham duc, cham soc, pham duy
sach duy » sach dung, sach dao, sach dat
vu cham » va cham, vu kham, tu cham
lap cua » lai cua, tap cua, lam cua
cua tre » cua te, cuu tre, cua triet
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi

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 duy) or (sach duoc)) sang ((mai hoi) or (ma hoa)). hieu vu cham duc va thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach duy) OR (sach duoc)) sang ((mai hoi) OR (ma hoa)). hieu vu cham duc va thanh lap cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach duy) or (sach duoc)) sang ((mai hoi) or (ma hoa)). hieu vu cham duc va thanh lap cua tre*.