Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » dong thanh, cong trinh, truong thanh
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
cua bang » chua bang, cua ban, cua dang
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong ty
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh trung cua bang ((cong ban) or (((cong tan) or (cong thanh)))) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung cua bang ((cong ban) OR (((cong tan) OR (cong thanh)))) khan cap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung cua bang ((cong ban) or (((cong tan) or (cong thanh)))) khan cap*.