Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
cong doanh » cong danh, cong doan, dong doanh
hieu sang » chieu sang, hieu quang, nhieu tang
hieu lang » chieu sang, hieu quang, nhieu tang
nhan tung » nhan trung, nhan tuong, nhan tong
lanh ban » lanh bang, lang ban, doanh ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) or (hieu lang)) - lanh ban cua thuong cong doanh nhan tung~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (hieu lang)) - lanh ban cua thuong cong doanh nhan tung*.