Perhaps you should try some spelling variations:
tay lang » tay tang, tay quang, tham lang
tai lang » tai cong, thi lan, tai san
tu sach » thu sach, su sach, te sach
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
dao hai » dao thai, dai hai, do hai
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
va hoc » van hoc
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((tay lang) OR (tai lang)) van hoi. hieu va hoc (nuoc or quoc) va dao hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tay lang) OR (tai lang)) van hoi. hieu va hoc (nuoc OR quoc) va dao hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tay lang) OR (tai lang)) van hoi. hieu va hoc (nuoc or quoc) va dao hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tay lang) OR (tai lang)) van hoi. hieu va hoc (nuoc or quoc) va dao hai cua tre*.