Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
tien anh » tieng anh, tien manh, dien anh
huy toan » huy tran, huu toan, huy hoang
ly toan » le toan, ly hoan, ly tran

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (tien anh)) - canh tranh cua thong cong ((ly toan) OR (huy toan)) ban~.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (tien anh)) - canh tranh cua thong cong ((ly toan) or (huy toan)) ban*.