Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ban tinh » ban thanh, quan tinh, ban hanh
yen tinh » tuyen tinh
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: co ((ban tinh) or (yen tinh)) - canh tranh cua nhung cong thanh ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co ((ban tinh) OR (yen tinh)) - canh tranh cua nhung cong thanh ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co ((ban tinh) or (yen tinh)) - canh tranh cua nhung cong thanh ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: co ((ban tinh) or (yen tinh)) - canh tranh cua nhung cong thanh ((toan tap) OR (toan ban))*.