Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doanh hanh » doanh thanh, doanh anh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua nhung » va nhung
cong lang » cong vang, cong luong, cong quang
hanh cua » manh cua, hang cua, hanh sua
lang van » dang van, tang van, hoang van

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

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