Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham thuc » nham thuc, pham thuc, tham thuc
nang mai » nang ma, nang tai, lang mai
qua cham » qua hai, qua cac, va cham
so sach » so sanh, bo sach, co sach
mai hoi » mai khoi, dai hoi, lai hoi
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang mai hoi. hieu qua cham thuc va hanh vi ((cua triet) OR (su tien))~.
• Adding a wildcard symbol may retrieve word variants: so sach y nang mai hoi. hieu qua cham thuc va hanh vi ((cua triet) or (su tien))*.