Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam thuc » am thuc, nam thuc, cam thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, mang may
qua cam » qua cham, qua cac, qua ca
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua

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 ma) OR (nang cao)) hoi. hieu qua cam thuc dan hanh di cua triet~.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang ma) or (nang cao)) hoi. hieu qua cam thuc dan hanh di cua triet*.