Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
phan thuc » nhan thuc, phap thuc, pham thuc
canh may » canh tay, hanh may, mang may
may nang » may nong, ky nang, cam nang
day hanh » day nhanh, dao hanh, day manh
so canh » so sanh, bo canh, so danh
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
cua tre » cua te, cuu tre, cua triet
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: so canh may nang x hoi. hieu ve phan thuc ((day hanh) OR (day thanh)) dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so canh may nang x hoi. hieu ve phan thuc ((day hanh) OR (day thanh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: so canh may nang x hoi. hieu ve phan thuc ((day hanh) OR (day thanh)) dai cua tre*.