Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
cac dac » cac dan, cac dai, cac bac
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
cac duc » cac du, cao duc, cac nuoc
xang x » nang x
y xang » ty xang
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: ((te sach) OR (toc sach)) y xang x hoi. thien van ((cac duc) or (cac dac)) ban thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y xang x hoi. thien van ((cac duc) OR (cac dac)) ban thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y xang x hoi. thien van ((cac duc) or (cac dac)) ban thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y xang x hoi. thien van ((cac duc) or (cac dac)) ban thanh hai cua tre*.