Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
va phuong » va thuong, cac phuong
tranh va » tranh van, trang va, trinh va
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
than cau » toan cau, phan cau, than cap

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

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