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
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
toan ban » van ban
toan cao » 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 sang - ((canh doanh) OR (doanh doanh)) cua dung cong thanh ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((canh doanh) OR (doanh doanh)) cua dung cong thanh ((toan ban) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - ((canh doanh) OR (doanh doanh)) cua dung cong thanh ((toan ban) or (toan cao))*".