Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tay lang » tai lang, tay tang, tay quang
dinh lai » dinh lam, dinh lap, dinh tai
lai cua » dai cua, hai cua, lai chau
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
o lang » hoa lang, hoi lang

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 ((tay lang) or (o lang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) dinh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((tay lang) OR (o lang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) dinh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((tay lang) or (o lang)) xa hoi. hieu vu cham ((xuc van) OR (luc van)) dinh lai cua tre*".