Perhaps you should try some spelling variations:
hang doanh » hanh doanh, nhung doanh, dung doanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
van doanh » toan doanh, van dong, van thanh
dong cong » duong cong, dung cong, dang cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
cong van » cong vang, cong san, song van
toan cao » toan tap
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: doc hieu xanh - ((hang doanh) OR (van doanh)) cua dong cong van ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hang doanh) OR (van doanh)) cua dong cong van ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hang doanh) OR (van doanh)) cua dong cong van ((toan cao) or (toan ban))*.