Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thanh lap » thanh san, phan lap, thanh hai
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong thanh, cong ty, cong ha
cong tac » cong ty

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 thong ((cong tan) or (((cong san) OR (cong tac)))) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh cua thong ((cong tan) OR (((cong san) OR (cong tac)))) thanh lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - canh tranh cua thong ((cong tan) or (((cong san) OR (cong tac)))) thanh lap*".