Perhaps you should try some spelling variations:
trung thanh » truong thanh
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung tam, tran tuan, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chan cap » khan cap, than cap, cao 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: doi chieu sang - thanh ((trung tuan) OR (trung thanh)) nhung ((cong dan) OR (cong san)) chan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh ((trung tuan) or (trung thanh)) nhung ((cong dan) OR (cong san)) chan cap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((trung tuan) or (trung thanh)) nhung ((cong dan) OR (cong san)) chan cap*.