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, hien hanh
dang cong » dung cong
cua dang » cua cong, cua ban
cong san » cong tac
san chan » san chang, dan chan, san chay
chan tu » phan tu, han tu, chon 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: hoc ((hieu manh) OR (dieu hanh)) - ((hanh trang) OR (hanh trinh)) cua dang cong san chan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - ((hanh trang) or (hanh trinh)) cua dang cong san chan tu~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - ((hanh trang) or (hanh trinh)) cua dang cong san chan tu*.