Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
duong cong » dung cong, luong cong, duong trong
cua duong » cua dong, cua huong, qua duong
hanh ban » thanh ban, hang ban, hanh han
hanh san » thanh san, khach san, thanh son
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: hoc ((thieu xanh) or (chieu xanh)) - ((hanh ban) or (hanh san)) cua duong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - ((hanh ban) OR (hanh san)) cua duong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - ((hanh ban) or (hanh san)) cua duong cong dan toan cao*.