Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
quan nhung » qua nhung, cua nhung, luan chung
cong hoan » cong hoa, dong hoa, cong ha
canh ban » can ban, canh dan, canh van
ban quan » van quan
cong san » cong tac

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 ban quan nhung ((cong hoan) or (cong san)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - canh ban quan nhung ((cong hoan) OR (cong san)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu xanh)) - canh ban quan nhung ((cong hoan) or (cong san)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu xanh)) - canh ban quan nhung ((cong hoan) or (cong san)) phan tu*.