Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau 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 dau » phan tu, hang dau

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 tinh) OR (chieu sach)) - canh tinh luan van cong anh phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (chieu sach)) - canh tinh luan van cong anh phan dau*".