Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh huong » thanh huong, anh huong, manh huong
huong cua » dung cua
cua nhung » va nhung
thanh tap » thanh lap, thanh tai, thanh tay
cong ban » cong bang, cong tan, cong dan
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)) - hanh huong cua nhung ((cong ban) or (cong san)) thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - hanh huong cua nhung ((cong ban) OR (cong san)) thanh tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu xanh)) - hanh huong cua nhung ((cong ban) or (cong san)) thanh tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu xanh)) - hanh huong cua nhung ((cong ban) or (cong san)) thanh tap*.