Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
nganh nong » nganh cong
nong suat » nang suat, cong suat, nong san
suat dung » thuat dung, xuat duong, suat huong
trong tan » trong quan, trong cac, trong ca
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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: theo ((chieu sach) OR (chieu xanh)) - nganh nong suat dung trong tan toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu xanh)) - nganh nong suat dung trong tan toan cau*.