Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
lan doanh » van doanh, lan oanh, lap doanh
doanh cua » doanh luan
dong cong » duong cong, dung cong, dang cong
cong manh » cong danh, duong manh, cong thanh
cua dong » chua dong, cua cong, cua dang
manh van » anh van, menh van, canh van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sang)) - lan doanh cua dong cong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - lan doanh cua dong cong manh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - lan doanh cua dong cong manh van ban*.