Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
truc van » truc va, thuc van, truc ban
thanh va » thanh van, hanh va, thanh ha
xang xa » lang xa, mang xa, ang xa
cua tre » cua te, cuu tre, cua triet
y xang » ty xang
va dai » va dao, vi dai, va dap
va dau » va dao
va cua » va chua, via cua, ca cua

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