Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
bat cua » ban cua, mat cua, bai cua
cac dac » cac dan, cac dai, cac bac
ty lang » ty xang, ty hang, tu lang
cua tre » cua te, cuu tre, cua triet
va dan » va dao, va dau, va dap
ca dan » cac dan, ca dao

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (tay lang)) xa hoi. lieu va cac dac ((va dan) OR (ca dan)) bat cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) or (tay lang)) xa hoi. lieu va cac dac ((va dan) OR (ca dan)) bat cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (tay lang)) xa hoi. lieu va cac dac ((va dan) OR (ca dan)) bat cua tre*.