<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-dh-thai-nguyen-dh-su-pham-nam-2014-dtDTS.html>