Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hung quang » dung quang, hong quang, luong quang
vung quang » dung quang, luong quang, duong quang
cong can » cong san, cong tan, cong dan
can phan » van phan, cac phan, can chan
phan cac » nhan cach, phan dau, phan lap

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 (chieu sach)) - thanh ((hung quang) OR (vung quang)) trong cong can phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh ((hung quang) OR (vung quang)) trong cong can phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - thanh ((hung quang) OR (vung quang)) trong cong can phan cac".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - thanh ((hung quang) OR (vung quang)) trong cong can phan cac*.