Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van dinh » van minh, van dich, xuan dinh
cham xuc » cam xuc, chat xuc, cham soc
lang van » dang van, tang van, hoang van
lang ha » long ha
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va dinh » va kinh, va tinh, vu dinh
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 y ((lang van) or (lang ha)) hoi. hieu vu cham xuc ((van dinh) OR (va dinh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((lang van) OR (lang ha)) hoi. hieu vu cham xuc ((van dinh) OR (va 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 vu cham xuc ((van dinh) OR (va dinh)) lai cua tre*".