Perhaps you should try some spelling variations:
chieu tach » chiet tach, chiu trach, chieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
canh tinh » hanh tinh, manh tinh, canh tranh
tinh luan » trinh luan, binh luan, minh luan
van cong » van dong, van phong, phan cong
cong anh » cong danh, dong anh, hong anh
anh phan » hanh phan, anh nhan, anh han
phan cau » phan dau, phan cac, phan tu

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 (chieu sach)) - canh tinh luan van cong anh phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tach) OR (chieu sach)) - canh tinh luan van cong anh phan cau*.