<http://schema.org/query-input>
"required name=search_term"^^<http://www.w3.org/2001/XMLSchema#string>
<http://diemthi.24h.com.vn/diem-thi-dai-hoc/diem-thi-sy-quan-luc-quan-i-kv-mien-bac-nam-2016-dtLAH.html>