Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan dong » quang dong, quan long, quan hoang
dong cong » duong cong, dung cong, dang cong
hanh ban » thanh ban, hang ban, hanh san
ban quan » van quan
cong dan » cong san, cong tan, huong dan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - hanh ban quan dong cong dan ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (hieu manh)) - hanh ban quan dong cong dan ((toan ban) OR (van ban))~".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - hanh ban quan dong cong dan ((toan ban) OR (van ban))*.