Perhaps you should try some spelling variations:
vanh dai » vanh tai, lanh dao, van dao
hanh dai » hanh tai, hanh dao, thanh dat
te sach » toc sach
van dai » van dao, van hai, can dai
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
nang o » nang co, nang ho, nang ro
xuc va » duc va, tuc va, luc va
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang o hoi. hieu va cac xuc va ((hanh dai) OR (((vanh dai) OR (van dai)))) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang o hoi. hieu va cac xuc va ((hanh dai) or (((vanh dai) OR (van dai)))) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang o hoi. hieu va cac xuc va ((hanh dai) or (((vanh dai) OR (van dai)))) cuu tre*.