Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
chu sang » chu bang, thu sang, chuc nang
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

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

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