Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
manh hai » lanh hai, minh hai, thanh hai
tu sach » thu sach, su sach, te sach
anh hai » lanh hai, anh thai, anh bai
xuc ban » duc ban, cuc ban, quoc ban
van cam » van nam, van lam, van cau
ty nang » ky nang, ty hang, ly nang
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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: tu sach ((ty nang) OR (ty xang)) x hoi. hieu van cam xuc ban ((anh hai) OR (manh hai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty xang)) x hoi. hieu van cam xuc ban ((anh hai) or (manh hai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) x hoi. hieu van cam xuc ban ((anh hai) or (manh hai)) cua tre*.