Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
tong cong » trong cong, cong cong, dung cong
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
tranh va » tranh van, trang va, trinh va

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) or (chieu xanh)) - canh tranh va ((thong cong) OR (tong cong)) ban thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - canh tranh va ((thong cong) OR (tong cong)) ban thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - canh tranh va ((thong cong) OR (tong cong)) ban thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - canh tranh va ((thong cong) OR (tong cong)) ban thanh cau*.