Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, nhanh quang, nhanh thang
tieu sach » chieu sach, dien sach, te sach
hanh mang » hanh trang, nhanh lang, thanh hang
thanh hai » thanh phan, thanh san
thanh hoa » thanh pho
luan ban » luan van, luan san, luan han
ban song » bang song, bean song, ban cong
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 mang) OR (nhanh mang)) luan ban song san ((thanh hai) or (thanh hoa))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh mang) OR (nhanh mang)) luan ban song san ((thanh hai) OR (thanh hoa)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - ((hanh mang) OR (nhanh mang)) luan ban song san ((thanh hai) or (thanh hoa))".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((hanh mang) OR (nhanh mang)) luan ban song san ((thanh hai) or (thanh hoa))*.