Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu sang » chieu sang, thieu khang, thieu quang
canh doanh » hanh doanh, chinh doanh, kinh doanh
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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: hoc thieu sang - ((canh doanh) OR (doanh doanh)) cua bang cong tac ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((canh doanh) or (doanh doanh)) cua bang cong tac ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((canh doanh) or (doanh doanh)) cua bang cong tac ((toan cau) OR (toan ban))*.