Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
chi xanh » chi danh, chi hanh, chieu xanh
cua bang » chua bang, cua ban, cua dang
toan ban » van ban
chi anh » chi danh, chi hanh, thi anh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi xanh) or (chi anh)) - hanh tranh cua bang phuong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi anh)) - hanh tranh cua bang phuong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi anh)) - hanh tranh cua bang phuong tinh toan ban*.