Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
thanh ban » thanh san, thanh van, thanh bac
dong cong » duong cong, dung cong, dang cong
quang cao » nang cao, quang nam
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
quan cao » quan cau, quan ao, juan cao
ban cua » ban quan

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 - thanh ban cua dong cong tan ((quan cao) OR (quang cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - thanh ban cua dong cong tan ((quan cao) OR (quang cao))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ban cua dong cong tan ((quan cao) OR (quang cao))*.