Perhaps you should try some spelling variations:
van nhanh » van thanh, van hanh, van nhan
van khanh » van thanh, van hanh, van anh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nang ro » nang co, nang ho, nang ra
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ro hai » co hai, o hai, so hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ro hai. hieu van cac xuc ((van nhanh) or (van khanh)) tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ro hai. hieu van cac xuc ((van nhanh) OR (van khanh)) tri cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ro hai. hieu van cac xuc ((van nhanh) or (van khanh)) tri cua tre*.