Perhaps you should try some spelling variations:
quan trong » gian trong
cong doanh » cong danh, cong doan, dong doanh
doanh phan » doanh nhan, doan phan, doanh thanh
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
lanh ban » lanh bang, lang ban, doanh ban
can bang » cao bang, can 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: doi hieu lang - ((lanh ban) OR (can bang)) quan trong cong doanh phan tu~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((lanh ban) or (can bang)) quan trong cong doanh phan tu*.