Perhaps you should try some spelling variations:
hanh doanh » hang doanh, doanh doanh, hanh dong
khong cong » thong cong, khong cang, chong cong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
cua khong » hua khong, cua phuong, cua thuong
thanh van » thanh san, thanh toan, thanh phan
hoc hieu » hoc thieu, hoc hien, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - ((((chinh doanh) or (kinh doanh))) or (hanh doanh)) cua khong cong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - ((((chinh doanh) OR (kinh doanh))) OR (hanh doanh)) cua khong cong thanh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - ((((chinh doanh) or (kinh doanh))) or (hanh doanh)) cua khong cong thanh van ban*.