Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chau tinh » cuu tinh, ha tinh, cua tinh
tranh cua » doanh cua, manh cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong san, cong ty, cong ha
cong tac » cong ty
toan ban » van ban
o chau » a chau, 3 chau, moc chau

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

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