Perhaps you should try some spelling variations:
thanh trung » thanh tung
bien tinh » bi tinh, yen tinh, diep tinh
cua trong » cua truong, cua trung, qua trong
dot bien » mot bien, doi bien, duoc bien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: dot bien tinh - ((thanh trung) OR (canh tranh)) cua trong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dot bien tinh - ((thanh trung) OR (canh tranh)) cua trong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: dot bien tinh - ((thanh trung) OR (canh tranh)) cua trong cong dan toan cao*.