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