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
dang vat » dang van, dong vat, dang nhat
vat dung » van dung, va dung, viet dung
cong san » cong tac
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - hanh dang vat dung ((cong san) or (huong dan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh dang vat dung ((cong san) OR (huong dan)) than ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh dang vat dung ((cong san) or (huong dan)) than ban*.