Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
luan chong » luan chung, luan cong, luan phong
chong cong » cong cong, thong cong, cuong cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((kinh doanh) or (doanh hoan)) luan chong cong tan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((kinh doanh) OR (doanh hoan)) luan chong cong tan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((kinh doanh) or (doanh hoan)) luan chong cong tan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((kinh doanh) or (doanh hoan)) luan chong cong tan ((toan cau) OR (toan cao))*.