Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
cac xuc » cam xuc, cac nuoc, chat xuc
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
sang xa » song xa, lang xa, sang ma
xuc va » duc va, tuc va, luc va
y sang » _ sang, duy sang
ve cac » va cac, vien cac

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) OR (doc sach)) y sang xa hoi. hieu ve cac xuc va danh ((vai cua) OR (lai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) y sang xa hoi. hieu ve cac xuc va danh ((vai cua) or (lai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) y sang xa hoi. hieu ve cac xuc va danh ((vai cua) or (lai cua)) tre*.