Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
cua khong » hua khong, cua phuong, cua thuong
cong tac » cong ty
hang tai » hang va, dung tai
han tai » nhan tai, van tai, toan tai

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

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