Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
cuong cong » cong cong, luong cong, duong cong
tranh cua » doanh cua, manh cua
cua cuong » cua cong, cua huong, cua truong
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 tinh - canh tranh cua cuong cong ((tam toan) or (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh tranh cua cuong cong ((tam toan) OR (bai toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh tranh cua cuong cong ((tam toan) or (bai toan)) cau*.