Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
dinh lai » dinh lam, dinh lap, dinh tai
lai cua » dai cua, hai cua, lai chau
vuc van » duc van, luc van, thuc van
xuc van » duc van, luc van, xuc ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang ha » long ha
cua tre » cua te, cuu tre, cua triet

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 y ((lang van) OR (lang ha)) hoi. hieu ve cham ((xuc van) OR (vuc van)) dinh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((lang van) or (lang ha)) hoi. hieu ve cham ((xuc van) OR (vuc van)) dinh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((lang van) or (lang ha)) hoi. hieu ve cham ((xuc van) OR (vuc van)) dinh lai cua tre*.