<http://schema.org/headline>
"\u201CV\u0103n h\u1ECDc v\u1EC1 to\u00E1n h\u1ECDc\u201D d\u01B0\u1EDBi g\u00F3c nh\u00ECn c\u1EE7a gi\u00E1o s\u01B0 Ng\u00F4 B\u1EA3o Ch\u00E2u "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.vietnamplus.vn/van-hoc-ve-toan-hoc-duoi-goc-nhin-cua-giao-su-ngo-bao-chau/404601.vnp>