Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong dan » cong san, huong dan, cong dong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan tap » toan 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 - canh tran van nhung ((cong dan) OR (((cong tan) OR (cong tac)))) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh tran van nhung ((cong dan) or (((cong tan) OR (cong tac)))) toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh tran van nhung ((cong dan) or (((cong tan) OR (cong tac)))) toan tap*.