Perhaps you should try some spelling variations:
cong thuong » hang thuong
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
cong tuan » cong tan, cong luan, cong thanh
tuan cong » thuan cong, luan cong, tran cong
ban thanh » ban hanh, ban hang
ban phan » ban phap, van phan, ban nhan
ban than » van thanh, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - thanh cong tuan cong thuong ((ban phan) or (((ban than) OR (ban thanh)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - thanh cong tuan cong thuong ((ban phan) OR (((ban than) OR (ban thanh)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - thanh cong tuan cong thuong ((ban phan) or (((ban than) OR (ban thanh)))) cau".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - thanh cong tuan cong thuong ((ban phan) or (((ban than) OR (ban thanh)))) cau*.