Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hang vai » hang va, hang tai, hang hai
ly hang » ly quang
van cam » van nam, van lam, van cau
xuc ban » cuc ban, quoc ban, xuat ban
duc ban » duc tan, duc van, dua ban
vai cua » dai cua, hai cua, lai cua
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: thu sach ((ly hang) or (ty xang)) xa hoi. hieu van cam ((xuc ban) or (duc ban)) hang vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly hang) OR (ty xang)) xa hoi. hieu van cam ((xuc ban) OR (duc ban)) hang vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly hang) or (ty xang)) xa hoi. hieu van cam ((xuc ban) or (duc ban)) hang vai cua tre*.