Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
hoc dieu » hoc thieu, hoc hien
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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 dieu hanh - hanh trang cua nhung ((cong san) OR (cong tan)) ((than cap) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - hanh trang cua nhung ((cong san) or (cong tan)) ((than cap) OR (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - hanh trang cua nhung ((cong san) or (cong tan)) ((than cap) OR (khan cap))*.