Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trang cua » tranh cua, tang cua, trung cua
cong cong » cong dong, trong cong, dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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 ((hien xanh) or (chieu sach)) - hanh trang cua cong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu sach)) - hanh trang cua cong cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu sach)) - hanh trang cua cong cong dan than ban*.