Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong tan, huong dan, cong dong
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.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - canh tranh cua nhung ((cong dan) OR (cong san)) chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - canh tranh cua nhung ((cong dan) OR (cong san)) chan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - canh tranh cua nhung ((cong dan) OR (cong san)) chan cau*.