Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
phan thuc » nhan thuc, phap thuc, pham thuc
may nang » may nong, cam nang, cao nang
thuc day » thuc dan, thuc vat
so canh » so sanh, bo canh, so danh
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
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) OR (ky nang)) x hoi. hieu ve phan thuc day thanh ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so canh ((may nang) OR (ky nang)) x hoi. hieu ve phan thuc day thanh ((vai cua) OR (lai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so canh ((may nang) OR (ky nang)) x hoi. hieu ve phan thuc day thanh ((vai cua) or (lai cua)) tre*".