Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
pham thuc » phap thuc, pham chuc, nham thuc
gianh lai » gian lan
hieu sau » hieu su, hieu suat, tieu su
sau pham » san pham, su pham, cau pham
va gianh » va gian, van giang, va giai
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
thuc va » thuc vat, thuc dan, thuc day
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky tang ((ma hoi) OR (ma hoa)). hieu sau pham thuc va gianh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky tang ((ma hoi) OR (ma hoa)). hieu sau pham thuc va gianh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky tang ((ma hoi) OR (ma hoa)). hieu sau pham thuc va gianh lai cua tre*.