Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
van cam » van nam, van lam, van cau
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((te sach) OR (toc sach))) or (so sach)) ky nang x hoi. hieu van cam xuc va thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (toc sach))) OR (so sach)) ky nang x hoi. hieu van cam xuc va thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((te sach) OR (toc sach))) or (so sach)) ky nang x hoi. hieu van cam xuc va thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((te sach) OR (toc sach))) or (so sach)) ky nang x hoi. hieu van cam xuc va thanh van cua tre*.