Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » hieu quang, nhieu tang, hieu van
va phuong » va thuong, cac phuong
thanh hoa » thanh pho
va thong » va thuong, he thong, va cong
hoa cao » hoc cao, hoa co, hoa cac

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

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