Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ve cham » va cham, ve chat, vu cham
ban voi » ban moi, ba voi, ban noi
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cam » ve cac, va cam, ve cai
ban vi » ban va, ban ve, gan vi

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: toc sach ky lang xa hoi. hieu ((ve cam) OR (ve cham)) duc van ((ban vi) OR (ban voi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky lang xa hoi. hieu ((ve cam) or (ve cham)) duc van ((ban vi) OR (ban voi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky lang xa hoi. hieu ((ve cam) or (ve cham)) duc van ((ban vi) OR (ban voi)) cua tre*.