Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chiu trach
truong cao » truong dai
trung tuan » trung thanh, trung tam, tran tuan
trung cap » trung tam
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tach - thanh ((((trung cap) OR (truong cao))) OR (trung tuan)) dung cong san than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tach - thanh ((((trung cap) OR (truong cao))) or (trung tuan)) dung cong san than cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu tach - thanh ((((trung cap) OR (truong cao))) or (trung tuan)) dung cong san than cau*.