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
trinh toan » tinh toan, thanh toan, trinh han
cua nong » cua cong, cuu nong, cua dong
cua dang » cua cong, cua ban
toan ban » van ban

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 xanh - thanh tung ((cua nong) OR (cua dang)) cong trinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh tung ((cua nong) or (cua dang)) cong trinh toan ban*.