Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cong rac » cong tac, cong cac, cong dac
rac tren » ran tren, tac tren, sach tren
tren dat » tren dia, tren may

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu xanh - ((thanh tung) or (canh tranh)) va nhung cong rac tren dat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((thanh tung) OR (canh tranh)) va nhung cong rac tren dat*.