Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, manh trung, danh trung
hanh trang » thanh trung, canh tranh, hanh trinh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (chinh sach)) - ((hanh trung) OR (hanh trang)) cua dung cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chinh sach)) - ((hanh trung) OR (hanh trang)) cua dung cong dan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chinh sach)) - ((hanh trung) OR (hanh trang)) cua dung cong dan phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chinh sach)) - ((hanh trung) OR (hanh trang)) cua dung cong dan phan tu*.