Perhaps you should try some spelling variations:
theo chiet » theo chieu
thep thiet » thep viet, thuyet thiet
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chiet) OR (thep thiet)) tach - hanh tranh cua cong cong ((dan toan) OR (manh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chiet) OR (thep thiet)) tach - hanh tranh cua cong cong ((dan toan) or (manh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo chiet) OR (thep thiet)) tach - hanh tranh cua cong cong ((dan toan) or (manh toan)) cau*.