Perhaps you should try some spelling variations:
chiet tach » chieu sach
truong cao » truong dai
trung tuan » trung thanh, trung tam, tran tuan
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
san toan » van toan, dan toan, manh 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 chiet tach - thanh ((truong cao) or (trung tuan)) dung cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh ((truong cao) OR (trung tuan)) dung cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh ((truong cao) or (trung tuan)) dung cong san toan tap*.