Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nam xuc » cam xuc, nam xua, nam thuc
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
x hoi » o hoi, x ho, 5 hoi

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 ((x hoi) or (xa hoi)). hieu van nam xuc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((x hoi) OR (xa hoi)). hieu van nam xuc va thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((x hoi) or (xa hoi)). hieu van nam xuc va thanh vi cua tre*.