Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
thuc ban » thuoc ban, thuc dan, thu ban
nam thuc » nam thuoc, am thuc, nam thu
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
sach ty » sach thu, xach tay, sach hay
ve nam » he nam, va nam, le nam
di cua » dai cua, doi cua, de cua
cua su » qua su

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: vu ((((sach tu) OR (sach ty))) OR (sach y)) lang xa hoi. hieu ve nam thuc ban thanh di cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((((sach tu) OR (sach ty))) or (sach y)) lang xa hoi. hieu ve nam thuc ban thanh di cua su~".
• Adding a wildcard symbol may retrieve word variants: vu ((((sach tu) OR (sach ty))) or (sach y)) lang xa hoi. hieu ve nam thuc ban thanh di cua su*.