Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
manh hai » lanh hai, minh hai, thanh hai
su sach » so sach, vu 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 hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty nang) or (ty hang)) xa hoi. hieu van cam xuc ban ((anh hai) or (manh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty hang)) xa hoi. hieu van cam xuc ban ((anh hai) OR (manh hai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ty hang)) xa hoi. hieu van cam xuc ban ((anh hai) or (manh hai)) cua tre*.