Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong cao » truong dai
chung cong » nhung cong, phung cong, chung thong
chong cong » cong cong, thong cong, cuong cong
hieu lang » chieu sang, hieu quang, nhieu tang
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (trieu tinh)) - thanh truong cao ((chung cong) OR (chong cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (trieu tinh)) - thanh truong cao ((chung cong) OR (chong cong)) tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (trieu tinh)) - thanh truong cao ((chung cong) OR (chong cong)) tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (trieu tinh)) - thanh truong cao ((chung cong) OR (chong cong)) tac toan tap*.