Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
tieu xanh » tieu danh, chieu xanh, dieu hanh
chua dong » ha dong, huy dong, hoa dong
cua dong » cua cong, cua dang, cua nong
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
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 tieu xanh - hanh trang ((cua dong) OR (chua dong)) cong tan ((toan tai) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh trang ((cua dong) OR (chua dong)) cong tan ((toan tai) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh trang ((cua dong) OR (chua dong)) cong tan ((toan tai) or (toan ban))*.