Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh doanh » hang doanh, chinh doanh, doanh doanh
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
doanh cua » doanh luan
tac han » tac nhan, tac ha, tac can
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (chieu xanh)) - hanh doanh cua ((khong cong) OR (khong cang)) tac han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu xanh)) - hanh doanh cua ((khong cong) OR (khong cang)) tac han tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chieu xanh)) - hanh doanh cua ((khong cong) OR (khong cang)) tac han tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu xanh)) - hanh doanh cua ((khong cong) OR (khong cang)) tac han tap*.