Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
gian cau » gian chau, gian cac, gian cam

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

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