Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong san » cong tac
chan tu » phan tu, chon tu, chai tu
han tu » phan tu, hanh tu, ban tu

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: doc hieu manh - ((hanh trang) OR (hanh trinh)) cua dang cong san ((chan tu) OR (han tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - ((hanh trang) or (hanh trinh)) cua dang cong san ((chan tu) OR (han tu))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - ((hanh trang) or (hanh trinh)) cua dang cong san ((chan tu) OR (han tu))*.