<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<https://rongmotamhon.net/xem-kinh_Phat-Thuyet-Xuat-Sanh-Vo-Luong-Mon-Tri-Kinh-_dttqcdlp_can-long.html>