Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
tuan chong » tuan phong, thuan phong, toan thong
chong cong » cong cong, thong cong, cuong cong
hieu lang » hieu quang, nhieu tang, hieu van
tung tuan » trung tuan, hung tuan, quang tuan
chinh cau » chinh chau, chinh ca, chinh tai
chinh can » chinh ca, chinh ban, chinh ngan
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) OR (hieu lang)) - thanh tung tuan chong cong dan ((chinh cau) or (chinh can))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh tung tuan chong cong dan ((chinh cau) OR (chinh can)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - thanh tung tuan chong cong dan ((chinh cau) or (chinh can))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - thanh tung tuan chong cong dan ((chinh cau) or (chinh can))*.