Perhaps you should try some spelling variations:
chieu tach » chieu sach, chiu trach, chieu tinh
chiet tach » chieu sach
tranh luan » trinh luan, trinh luat, doanh luan
luan toan » luan hoan, xuan toan, luan thanh
toan cong » tran cong, toan thong, doan cuong
cong anh » cong danh, dong anh, hong anh
anh nhan » danh nhan, doanh nhan, thanh nhan
nhan cau » nhanh cau, phan cau, nhan sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tach) or (chiet tach)) - canh tranh luan toan cong anh nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tach) OR (chiet tach)) - canh tranh luan toan cong anh nhan cau*.