Perhaps you should try some spelling variations:
doi chinh » do chinh, tai chinh, hoc chinh
lanh manh » lanh tranh, lan anh, van manh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chinh sach - ((lanh manh) or (canh tranh)) cua dung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - ((lanh manh) OR (canh tranh)) cua dung cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: doi chinh sach - ((lanh manh) or (canh tranh)) cua dung cong dan than cao*.