Perhaps you should try some spelling variations:
thien van » thi van
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
xuc ban » cuc ban, quoc ban, xuat ban
van cau » van dau, van hau, van chat
ly hang » ly quang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 ((ly hang) or (ty xang)) xa hoi. thien van cau ((xuc ban) or (duc ban)) thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly hang) OR (ty xang)) xa hoi. thien van cau ((xuc ban) OR (duc ban)) thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly hang) or (ty xang)) xa hoi. thien van cau ((xuc ban) or (duc ban)) thanh vi cua tre*.