Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chong cong » cong cong, thong cong, cuong cong
tranh cua » doanh cua, manh cua
cua chong » cua cong, cua chung, cua khong
ho chieu » theo chieu, hoc thieu, doi chieu
tam toan » tap toan, tam than, pham toan
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - canh tranh cua chong cong ((tam toan) or (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh tranh cua chong cong ((tam toan) OR (bai toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh tranh cua chong cong ((tam toan) or (bai toan)) cau*.