Perhaps you should try some spelling variations:
doc sach » hoc sach, nuoc sach, dac sac
cham xuc » cam xuc, chat xuc, cham soc
toc sach » hoc sach, thuoc sach, nuoc sach
dinh tai » dinh toai, dinh tri, dinh thi
dinh hai » dinh thai, tinh hai, dinh ha
lang van » dang van, tang van, hoang van
xuc van » duc van, luc van, vuc van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
van hoi » van hoa, van hoc, van hoe
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: ((doc sach) or (toc sach)) o lang van hoi. hieu vu cham xuc van ((dinh hai) or (dinh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (toc sach)) o lang van hoi. hieu vu cham xuc van ((dinh hai) OR (dinh tai)) cua tre*.