Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tranh cua » doanh cua, manh cua
tong cong » cong cong, dung cong, dang cong
dang tran » dang thanh, quang tran, hoang tran
tran tap » toan tap, tran tan, tran tuan

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