Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dang » cong dong, cong dan, cong danh
cong dung » cuong dung, cong dong, cong luong
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - thanh ((trung va) or (trung ha)) nhung ((cong dang) OR (cong dung)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh ((trung va) OR (trung ha)) nhung ((cong dang) OR (cong dung)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - thanh ((trung va) or (trung ha)) nhung ((cong dang) OR (cong dung)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh ((trung va) or (trung ha)) nhung ((cong dang) OR (cong dung)) van ban*.