Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien manh » hien hanh, tien manh, hien nhanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong san » cong tac
chan cau » phan cau, can cau, chinh cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (hieu manh)) - hanh trang cua nhung ((cong dong) OR (cong san)) chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) OR (hieu manh)) - hanh trang cua nhung ((cong dong) or (cong san)) chan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) OR (hieu manh)) - hanh trang cua nhung ((cong dong) or (cong san)) chan cau*.