Perhaps you should try some spelling variations:
hoc chieu » hoc thieu, ho chieu, hoc dieu
manh tung » manh hung, thanh tung
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than man » than ma, thanh san, tran manh

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) OR (hoc hien)) xanh - ((manh tung) OR (canh tranh)) cua dong cong dan than man~.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) xanh - ((manh tung) or (canh tranh)) cua dong cong dan than man*.