Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
cong quang » luong quang, thong quang, duong quang
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong vang » cong lang, cong ngang, cong san
thang cau » hang cau, thong cau, thanh chau

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 trung cua nhung ((cong vang) or (cong quang)) thang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh trung cua nhung ((cong vang) OR (cong quang)) thang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - thanh trung cua nhung ((cong vang) or (cong quang)) thang cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - thanh trung cua nhung ((cong vang) or (cong quang)) thang cau*.