Perhaps you should try some spelling variations:
cong thuong » hang thuong
hanh trinh » canh tranh, hanh chinh
thieu xanh » chieu xanh, hieu manh, thien anh
trinh quan » tinh quang, trinh luat, trinh han
thuong han » thuong mai, thuong va, thuong gap
quan cong » qua cong, luan cong, quan dong
tien anh » tieng anh, tien manh, dien anh
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (tien anh)) - hanh trinh quan cong thuong han ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (tien anh)) - hanh trinh quan cong thuong han ((toan cao) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (tien anh)) - hanh trinh quan cong thuong han ((toan cao) OR (toan tap))*".