Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
chat xuc » chat huu, cam xuc, chao xu
dinh lai » dinh lam, dinh lap, dinh tai
van dinh » van minh, van dich, va dinh
lang van » dang van, tang van, hoang van
doc sach » hoc sach, nuoc sach, dac sac
lang ha » long ha
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
xuc van » duc van, luc van, vuc van
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (doc sach)) y ((lang van) or (lang ha)) hoi. hieu vu chat xuc van dinh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) y ((lang van) OR (lang ha)) hoi. hieu vu chat xuc van dinh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) y ((lang van) or (lang ha)) hoi. hieu vu chat xuc van dinh lai cua tre*".