Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
soc thiet » hoc thiet, toc thieu, hoc thieu
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
so thiet » hoc thiet, hoa thiet, tao thiet
cua bang » chua bang, cua ban, cua dang
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so thiet) OR (soc thiet)) tach - canh tranh cua bang cong thanh ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so thiet) OR (soc thiet)) tach - canh tranh cua bang cong thanh ((toan cau) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so thiet) OR (soc thiet)) tach - canh tranh cua bang cong thanh ((toan cau) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: ((so thiet) OR (soc thiet)) tach - canh tranh cua bang cong thanh ((toan cau) or (van ban))*.