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
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 dan) or (cong tan))) or (huong dan)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh cua thong ((((cong dan) OR (cong tan))) OR (huong dan)) than cap.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - canh tranh cua thong ((((cong dan) or (cong tan))) or (huong dan)) than cap*.