Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
dong cong » duong cong, dung cong, dang cong
doc hieu » toc thieu, hoc hien
hanh ban » thanh ban, hanh san, hanh han
hang ban » hang luan, hang va, hang tai
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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: ((doc hieu) OR (hoc thieu)) sang - ((hanh ban) OR (hang ban)) cua dong cong dan van ban~.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sang - ((hanh ban) or (hang ban)) cua dong cong dan van ban*.