Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong dan » cong tan, cong dong, cong tac
cong san » cong tac
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 - anh tang cua dung ((((cong dan) or (huong dan))) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - anh tang cua dung ((((cong dan) OR (huong dan))) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh tang cua dung ((((cong dan) or (huong dan))) or (cong san)) toan cao*.