Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
van cua » vang cua, ban cua, dan cua
xuc gia » duc gia, luc gia, tuc gia
ly nang » ky nang, ly vang, ly quang
ly hang » ly quang
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cao, va cai
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: thu sach ((ly nang) or (ly hang)) x hoi. hieu ((va cam) OR (va cac)) xuc gia thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly nang) OR (ly hang)) x hoi. hieu ((va cam) OR (va cac)) xuc gia thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ly nang) or (ly hang)) x hoi. hieu ((va cam) OR (va cac)) xuc gia thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly nang) or (ly hang)) x hoi. hieu ((va cam) OR (va cac)) xuc gia thanh van cua tre*.