Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
truong dong » trong dong, truong dang, tuong dong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
canh manh » lanh manh, canh tranh, cach mang
thanh hai » thanh phan, thanh hoa, thanh san
manh cua » doanh cua, ban cua
hai can » hai tan, hai van, hau can

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)) - canh manh cua ((truong dong) or (thuong dong)) thanh hai can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - canh manh cua ((truong dong) OR (thuong dong)) thanh hai can.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - canh manh cua ((truong dong) or (thuong dong)) thanh hai can".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - canh manh cua ((truong dong) or (thuong dong)) thanh hai can*.