Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hanh nhan » thanh nhan, danh nhan, anh nhan
dang cong » dung cong
hanh han » hanh phan, hanh san, anh han
cua dang » cua cong, cua ban
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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 (hieu lang)) - ((hanh han) or (hanh nhan)) cua dang cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - ((hanh han) OR (hanh nhan)) cua dang cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - ((hanh han) or (hanh nhan)) cua dang cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - ((hanh han) or (hanh nhan)) cua dang cong tac toan tap*.