Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
va phuong » va thuong, cac phuong
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
va thong » va thuong, he thong, va cong
cong ban » cong bang, cong san, cong tan

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) OR (va phuong)) 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) OR (va phuong)) 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) OR (va phuong)) cong ban thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - canh tranh ((va thong) OR (va phuong)) cong ban thanh cau*.