Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
chi xanh » chi danh, chi hanh, chieu xanh
tap toan » tap doan, tap quan, bai toan
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)) - canh tranh cua ((khong cong) or (cong cong)) tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi anh)) - canh tranh cua ((khong cong) OR (cong cong)) tap toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi anh)) - canh tranh cua ((khong cong) or (cong cong)) tap toan ban*.