Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, anh trinh
hien manh » hien hanh, tien manh, hieu manh
canh tinh » hanh tinh, manh tinh, canh tranh
lang nong » hang nong, lang dong, lang song
nong san » cong san, dong san, nong dan
san chan » san chang, dan chan, san chay
va lang » va nang, hoa lang
chan tu » phan tu, han tu, chon tu

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: hoc hien manh - ((canh trinh) OR (canh tinh)) va lang nong san chan tu~.
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - ((canh trinh) or (canh tinh)) va lang nong san chan tu*.