Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van ban
so sanh » do sanh
te sach » toc sach
nam xuc » cam xuc, nam xua, nam thuc
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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: ((so sanh) OR (te sach)) ky nang x ho. hieu van nam xuc ((van hanh) OR (van anh)) va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (te sach)) ky nang x ho. hieu van nam xuc ((van hanh) OR (van anh)) va cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (te sach)) ky nang x ho. hieu van nam xuc ((van hanh) OR (van anh)) va cua tre*.