Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
phan thuc » nhan thuc, phap thuc, pham thuc
cua triet » cua viet, su triet, va triet
canh may » canh tay, hanh may, mang may
may nang » may nong, ky nang, cam nang
day hanh » day nhanh, dao hanh, day manh
bo canh » kho canh
hieu ke » hieu kem, chieu ke, hieu ky
ke phan » ve phan, kenh phan, ke thang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo canh may nang x hoi. hieu ke phan thuc ((day hanh) or (day thanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo canh may nang x hoi. hieu ke phan thuc ((day hanh) OR (day thanh)) dai cua triet.
• Adding a wildcard symbol may retrieve word variants: bo canh may nang x hoi. hieu ke phan thuc ((day hanh) or (day thanh)) dai cua triet*.