Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thong dang » thong dung, thong mang, thong dan
hieu lang » hieu quang, nhieu tang, hieu van
dang hang » dang hoang, dang hung, dang hanh
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
hang dau » hang va, hang tai

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "mot ((chieu sang) OR (hieu lang)) - canh tranh va thong thong dang hang dau~".
• Adding a wildcard symbol may retrieve word variants: mot ((chieu sang) OR (hieu lang)) - canh tranh va thong thong dang hang dau*.