Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho thiet » hoc thiet, hoa thiet, so thiet
cong tac » cong ty
toan ban » van ban

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

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