Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
luan phuong » lan phuong, quang phuong, doan phuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, anh dung, hanh dong
tap toan » tap doan, bai toan
tap quan » tac quan, hai quan
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((trieu tinh) or (chieu sach)) - hanh dung luan phuong cong ((tap toan) OR (tap quan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((trieu tinh) OR (chieu sach)) - hanh dung luan phuong cong ((tap toan) OR (tap quan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((trieu tinh) or (chieu sach)) - hanh dung luan phuong cong ((tap toan) OR (tap quan)) cau*".