Perhaps you should try some spelling variations:
chiet tach » chieu sach
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 ung » luan hung, luon ung, luan chung
ung cong » dung cong, luong cong, duong cong
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
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 ((((chiet tach) or (hien khanh))) or (hien nhanh)) - hanh trang luan ung cong tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chiet tach) OR (hien khanh))) OR (hien nhanh)) - hanh trang luan ung cong tan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chiet tach) or (hien khanh))) or (hien nhanh)) - hanh trang luan ung cong tan chan cau*.