Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trung cao » truong cao, trung cap, trung co
cao thong » cao thuong, tao thong, cao phong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty

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 xanh - thanh trung cao thong ((cong tan) or (cong tac)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh trung cao thong ((cong tan) OR (cong tac)) van ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh trung cao thong ((cong tan) or (cong tac)) van ban*.