Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, tran tuan
truong cao » truong dai
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, phan cac

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 xanh - thanh ((trung tuan) OR (truong cao)) trong cong dan ((khan cap) OR (khoan cam))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh ((trung tuan) or (truong cao)) trong cong dan ((khan cap) OR (khoan cam))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((trung tuan) or (truong cao)) trong cong dan ((khan cap) OR (khoan cam))*.