Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua pham » quan pham, quy pham, qua cham
dinh cuu » dinh chi
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
xang xa » lang xa, mang xa, ang xa
duc ban » duc tan, duc van, dua ban
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (so sanh)) ty xang xa hoi. hieu qua pham duc ban thanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ty xang xa hoi. hieu qua pham duc ban thanh ((vi cuu) OR (dinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ty xang xa hoi. hieu qua pham duc ban thanh ((vi cuu) or (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ty xang xa hoi. hieu qua pham duc ban thanh ((vi cuu) or (dinh cuu)) tre*.