Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
cong cong » trong cong, dung cong, dang cong
van quan » van ban
quan cao » quang cao, quan cau, quan ao

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 - chinh doanh cua ((cong cong) or (cong dong)) van quan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - chinh doanh cua ((cong cong) OR (cong dong)) van quan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - chinh doanh cua ((cong cong) or (cong dong)) van quan cao*.