Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
cua triet » cua viet, va triet
thu sach » tu sach, thuat sach, thuoc sach
qua cham » qua hai, qua cac, va cham
su triet » su viet, su tien, ve triet
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoa. hieu qua cham thuc va hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoa. hieu qua cham thuc va hanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoa. hieu qua cham thuc va hanh vi ((cua triet) or (su triet))*.