Perhaps you should try some spelling variations:
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
van nang » van quang, van ban, van dong
nghe nam » nghe lam, nghiep nam, nghe nano
nam thuc » nam thuoc, am thuc, nam thu
danh dai » danh dau, danh di, vanh dai
danh sai » dung sai, danh bat, danh dau
tu sach » thu sach, su sach, te sach
thuc xa » thuc xay, tuc xa, thuc va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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) or (van nang)) x ho. hieu nghe nam thuc xa ((danh dai) OR (danh sai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (van nang)) x ho. hieu nghe nam thuc xa ((danh dai) OR (danh sai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (van nang)) x ho. hieu nghe nam thuc xa ((danh dai) OR (danh sai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (van nang)) x ho. hieu nghe nam thuc xa ((danh dai) OR (danh sai)) cua tre*.