Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
cua dung » cua dang, cua dong, qua dung
dang van » hoang van, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((dieu hanh) or (chieu xanh)) - thanh trung cua dung cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (chieu xanh)) - thanh trung cua dung cong dang van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (chieu xanh)) - thanh trung cua dung cong dang van ban*.