Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
ho trieu » mot trieu, 25 trieu, 30 trieu
san toan » van toan, manh toan, xuan toan
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: ho trieu tinh - thanh trung cua trong cong ((san toan) or (((dan toan) OR (dan than)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho trieu tinh - thanh trung cua trong cong ((san toan) OR (((dan toan) OR (dan than)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho trieu tinh - thanh trung cua trong cong ((san toan) or (((dan toan) OR (dan than)))) cau".
• Adding a wildcard symbol may retrieve word variants: ho trieu tinh - thanh trung cua trong cong ((san toan) or (((dan toan) OR (dan than)))) cau*.