Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
nhung cong » dung cong, thong cong, hang cong
truong va » truong dai, truong cao, truong dao
ho chiet » ho chieu, ho thiet, hoc thiet
so thiet » soc thiet, hoc thiet, hoa thiet
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, pham toan

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

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