Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan bang » luan nang, luan ban, luan tang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 - hanh tang luan bang ((cong dan) or (cong san)) ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang luan bang ((cong dan) OR (cong san)) ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang luan bang ((cong dan) or (cong san)) ((toan cau) or (toan cao))*.