Perhaps you should try some spelling variations:
sach duoc » sach nuoc, sach dung, sinh duoc
phan duy » pham duy, phan huy, phan duc
phan lap » phan dau
sach dao » lanh dao
gia phan » gia nhan, gia pha, gia thanh
lap cua » lai cua, tap cua, lam cua
duy gia » duy gian, duc gia, quy gia
cua tre » cua te, cuu tre, cua triet
ve phan » va phan, ke phan, ve phat
hieu ve » hieu va, hieu van
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: te ((sach duoc) or (sach dao)) sang ((mai hoi) or (ma hoa)). hieu ve phan duy gia phan lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach duoc) OR (sach dao)) sang ((mai hoi) OR (ma hoa)). hieu ve phan duy gia phan lap cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach duoc) or (sach dao)) sang ((mai hoi) or (ma hoa)). hieu ve phan duy gia phan lap cua tre*.