Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van hang » van khang, van hoang, van thang
ly nang » ky nang, ly hang, ly vang
van cac » van hac, van cau, van bac
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 van cac xuc van hang di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) OR (ly nang)) xa hoi. hieu van 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 van cac xuc van hang di cua tre*.