Perhaps you should try some spelling variations:
dong doanh » dung doanh, trong doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
ho chieu » theo chieu, doi chieu, mot chieu
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap

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