Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chiet tach » chieu sach
thien hach » thien thanh, hien hanh
truong cao » truong dai
han cong » phan cong, hang cong, hanh cong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
cao han » cao nhan, cao phan, cao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (thien hach)) - thanh truong cao han cong ((dan toan) OR (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (thien hach)) - thanh truong cao han cong ((dan toan) OR (dan than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) or (thien hach)) - thanh truong cao han cong ((dan toan) OR (dan than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (thien hach)) - thanh truong cao han cong ((dan toan) OR (dan than)) cau*.