Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hien khanh » hien hanh, dien khanh, thien thanh
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
trang luan » tang luan, tranh luan, trang tuan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 sach) or (hien khanh))) or (hien nhanh)) - hanh trang luan chung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (hien khanh))) OR (hien nhanh)) - hanh trang luan chung cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) or (hien khanh))) or (hien nhanh)) - hanh trang luan chung cong dan chan cau*.