Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh le » thinh le, thanh ve, thanh de
sach tay » xach tay, sach hay, sach nay
te sach » toc sach
tuc ban » thuc ban, truc ban, tu ban
lang xa » dang xay, lang van
lang ha » long ha
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tay ((lang xa) OR (lang ha)) hoi. hieu ((ve cam) or (va cam)) tuc ban thanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tay ((lang xa) OR (lang ha)) hoi. hieu ((ve cam) OR (va cam)) tuc ban thanh le cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tay ((lang xa) OR (lang ha)) hoi. hieu ((ve cam) or (va cam)) tuc ban thanh le cua vat".
• Adding a wildcard symbol may retrieve word variants: te sach tay ((lang xa) OR (lang ha)) hoi. hieu ((ve cam) or (va cam)) tuc ban thanh le cua vat*.