Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
ly vang » ly hang, ly quang
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
tuc gia » tac gia, duc gia, toc gia
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
ly van » le van, ly va, ly von
va cam » va cham, va cac, va cao

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 vang) or (ly van)) xa hoi. hieu va cam tuc gia thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly vang) OR (ly van)) xa hoi. hieu va cam tuc gia thanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly vang) or (ly van)) xa hoi. hieu va cam tuc gia thanh van cua tre*.