Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
cua dang » cua ban
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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 nhanh) or (chieu xanh)) - hanh trang ((cua dang) or (cua cong)) cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (chieu xanh)) - hanh trang ((cua dang) OR (cua cong)) cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (chieu xanh)) - hanh trang ((cua dang) or (cua cong)) cong dan than tap*.