Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
ho thiet » hoa thiet, so thiet, hoc thieu
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (ho thiet)) tach - canh tranh cua thuong cong tan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (ho thiet)) tach - canh tranh cua thuong cong tan ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (ho thiet)) tach - canh tranh cua thuong cong tan ((toan ban) or (van ban))*.