Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong nong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong lang » cong luong, cong quang, hoang lang
cong vang » cong quang, cong san, cong dong
doc hieu » toc thieu, hoc thieu, hoc hien
toan cao » toan ban, toan tap

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 lang) OR (cong ngang))) or (cong vang)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh cua nhung ((((cong lang) OR (cong ngang))) OR (cong vang)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - canh tranh cua nhung ((((cong lang) OR (cong ngang))) or (cong vang)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - canh tranh cua nhung ((((cong lang) OR (cong ngang))) or (cong vang)) toan cao*.