Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dau tren » dau tien, dat tren, dau tieng
cau tren » cu tren, ca tren, cau treo
thanh vi » hanh vi, thanh va, thanh ve
sach ty » sach y, sach tu, sach thu
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
va cau » van cau, va cac, va cao
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty lang xa hoi. hieu ((va cau) or (va dau)) xuc ban thanh vi ((cau tren) OR (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang xa hoi. hieu ((va cau) OR (va dau)) xuc ban thanh vi ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty lang xa hoi. hieu ((va cau) or (va dau)) xuc ban thanh vi ((cau tren) OR (dau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. hieu ((va cau) or (va dau)) xuc ban thanh vi ((cau tren) OR (dau tren))*.