Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
tam dung » tam duong, tac dung, am dung
tan dung » tran dung, tin dung, van dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac

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 tinh - thanh trung ((tam dung) OR (tan dung)) ((cong dan) or (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - thanh trung ((tam dung) OR (tan dung)) ((cong dan) OR (cong san)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - thanh trung ((tam dung) OR (tan dung)) ((cong dan) or (cong san)) van ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - thanh trung ((tam dung) OR (tan dung)) ((cong dan) or (cong san)) van ban*.