Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, hieu cach
chieu sang » hieu lang, nhieu tang
chieu xanh » chieu tinh, hieu manh
thanh tung » thanh cong
dung cong » dung trong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
tung ha » trung ha, dung ha, tung ho
ha dung » hai dung, kha dung, nha dung

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