Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
canh doanh » chinh doanh, doanh doanh, kinh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
hoi hieu » hoi phieu, hoi tieu, moi hieu
gian cap » gian cac, gian cam, gian cham

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - ((canh doanh) or (hanh doanh)) cua ((hang cong) OR (dang cong)) dan gian cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - ((canh doanh) OR (hanh doanh)) cua ((hang cong) OR (dang cong)) dan gian cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi hieu lang - ((canh doanh) or (hanh doanh)) cua ((hang cong) OR (dang cong)) dan gian cap".
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - ((canh doanh) or (hanh doanh)) cua ((hang cong) OR (dang cong)) dan gian cap*.