Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hang » van khang, van hoang, van thang
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
hang di » hang doi, hang vi, hang dien
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang
di cua » dai cua, doi cua, de cua

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 nang) or (ly nang)) xa hoi. hieu va cac xuc van hang di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y nang) OR (ly nang)) xa hoi. hieu va cac xuc van hang di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (ly nang)) xa hoi. hieu va cac xuc van hang di cua tre*.