Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang cong » dang cong, hang nong, bang cong
cua thong » cua thuong, cua khong, cua tong
cong cua » cong cu, dong cua, huong cua
cong dan » cong tan, cong dong, cong tac
cong san » cong tac
toan tap » toan ban

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 - hang cong cua thong ((((cong dan) OR (cong san))) or (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hang cong cua thong ((((cong dan) OR (cong san))) OR (huong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hang cong cua thong ((((cong dan) OR (cong san))) or (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hang cong cua thong ((((cong dan) OR (cong san))) or (huong dan)) toan tap*.