Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh bang » anh bang, hanh mang, lanh bang
luan phan » luan van, luan hoan
thanh hai » thanh phan, thanh san
thanh hoa » thanh pho
luan san » luan van, luan hoan, luan nang
song san » cong san, dong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh bang ((luan san) OR (luan phan)) song san ((thanh hai) or (thanh hoa))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - hanh bang ((luan san) OR (luan phan)) song san ((thanh hai) OR (thanh hoa))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh bang ((luan san) OR (luan phan)) song san ((thanh hai) or (thanh hoa))*".