Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh cua » trinh cua, sinh cua, tinh chat
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
than cau » toan cau, phan cau, than cap
luat » luan, xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh ((trinh luat) or (tinh cua)) hang ((cong tan) OR (cong tac)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((trinh luat) OR (tinh cua)) hang ((cong tan) OR (cong tac)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh ((trinh luat) or (tinh cua)) hang ((cong tan) OR (cong tac)) than cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((trinh luat) or (tinh cua)) hang ((cong tan) OR (cong tac)) than cau*.