Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
cua rung » cua trung, cua rang, cua truong
cua dong » chua dong, cua cong, cua dang
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((canh tranh) or (hanh trinh)) ((cua rung) or (cua dong)) cong ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((canh tranh) OR (hanh trinh)) ((cua rung) OR (cua dong)) cong ban khan cap.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((canh tranh) or (hanh trinh)) ((cua rung) or (cua dong)) cong ban khan cap*.