Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
toan tap » toan ban
tang va » trang va, tang van, thang va
va dung » van dung, va duong, vat 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 ((dieu hanh) or (((chieu xanh) OR (chieu sach)))) - hanh tang va dung cong hach toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (((chieu xanh) OR (chieu sach)))) - hanh tang va dung cong hach toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) or (((chieu xanh) OR (chieu sach)))) - hanh tang va dung cong hach toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) or (((chieu xanh) OR (chieu sach)))) - hanh tang va dung cong hach toan tap*.