Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hai chau » lai chau, ha chau, hat chau
hai hau » dai hau, hai hai, lai chau

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