Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
thong cong » thong thong, phong chong, cong cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tong cong » cong cong, dung cong, dang cong
nang phan » nang phat, nang thanh, nang quan
hoc hieu » hoc thieu, hoc hien, doc hieu

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 - canh tranh luan ((((thong cong) or (trong cong))) or (tong cong)) nang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh luan ((((thong cong) OR (trong cong))) OR (tong cong)) nang phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh luan ((((thong cong) or (trong cong))) or (tong cong)) nang phan tu*.