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 hua » doanh cua, doanh ha, doanh khoa
hua khong » hoa khong, cua khong, hoac khong
cong tac » cong ty
van tap » van tai, van tan, van tam
han tap » han tai, toan tap, nhan 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 hua khong ((cong san) or (cong tac)) ((van tap) OR (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh doanh hua khong ((cong san) OR (cong tac)) ((van tap) OR (han tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - hanh doanh hua khong ((cong san) or (cong tac)) ((van tap) OR (han tap))".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh doanh hua khong ((cong san) or (cong tac)) ((van tap) OR (han tap))*.