Perhaps you should try some spelling variations:
thanh trung » thanh tung
chong cong » cong cong, thong cong, cuong cong
cua chong » cua cong, cua chung, cua khong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - ((thanh trung) or (canh tranh)) cua chong cong ((dan toan) OR (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((thanh trung) OR (canh tranh)) cua chong cong ((dan toan) OR (dan than)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - ((thanh trung) or (canh tranh)) cua chong cong ((dan toan) OR (dan than)) cao".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((thanh trung) or (canh tranh)) cua chong cong ((dan toan) OR (dan than)) cao*.