Perhaps you should try some spelling variations:
cong thuong » hang thuong
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
nang luong » nang song
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
toan cao » toan ban, toan tap

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 (chieu xanh)) - canh tranh cua dang ((nang luong) or (cong thuong)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - canh tranh cua dang ((nang luong) OR (cong thuong)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu xanh)) - canh tranh cua dang ((nang luong) or (cong thuong)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu xanh)) - canh tranh cua dang ((nang luong) or (cong thuong)) toan cao*.