Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
bo sach » co sach, hoc sach
te sach » toc sach
nam xuc » cam xuc, nam xua, nam thuc
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sach) or (te sach)) ky nang x hoi. hieu van nam xuc van hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sach) OR (te sach)) ky nang x hoi. hieu van nam xuc van hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((bo sach) or (te sach)) ky nang x hoi. hieu van nam xuc van hanh va cua tre*.