Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong dan » cong tan, huong dan, cong dong
cong tac » cong ty
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh tran van nhung ((((cong dan) OR (cong san))) OR (cong tac)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh tran van nhung ((((cong dan) OR (cong san))) or (cong tac)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh tran van nhung ((((cong dan) OR (cong san))) or (cong tac)) toan ban*.