Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh cong » thanh cong, hang cong, hanh dong
bang cong » dang cong, bang song, hang cong
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
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 - ((hanh cong) or (bang cong)) cua thong ((cong dan) OR (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh cong) OR (bang cong)) cua thong ((cong dan) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh cong) or (bang cong)) cua thong ((cong dan) OR (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh cong) or (bang cong)) cua thong ((cong dan) OR (cong tan)) toan tap*.