Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
canh doanh » hanh doanh, chinh doanh, kinh doanh
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chieu sang)) - ((canh doanh) OR (doanh doanh)) cua bang cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - ((canh doanh) OR (doanh doanh)) cua bang cong tan van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - ((canh doanh) OR (doanh doanh)) cua bang cong tan van ban*".