Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
anh thai » anh thi, nhanh thai, tranh thai
cac xuc » cam xuc, cac nuoc, chat xuc
anh tai » hanh tai, vanh tai, xanh tai
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
so hai » son hai, su hai, so ha
o hoi » co hoi, o hoc, o hai

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 ((o hoi) or (so hai)). hieu va cac xuc van ((anh thai) or (anh tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang ((o hoi) OR (so hai)). hieu va cac xuc van ((anh thai) OR (anh tai)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang ((o hoi) or (so hai)). hieu va cac xuc van ((anh thai) or (anh tai)) cuu tre*.