Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
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
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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