Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
dang xay » dang van, van xay
nam thuc » nam thuoc, am thuc, nam thu
sach tay » xach tay, sach hay, sach nay
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, dam thuc
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
ve cua » le cua, de cua, te cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay ((lang xa) OR (dang xay)) hoi. hieu ve ((cam tuc) OR (nam thuc)) ban thanh ve cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tay ((lang xa) or (dang xay)) hoi. hieu ve ((cam tuc) OR (nam thuc)) ban thanh ve cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach tay ((lang xa) or (dang xay)) hoi. hieu ve ((cam tuc) OR (nam thuc)) ban thanh ve cua vat*.