<http://schema.org/mainEntityOfPage>
<http://www.vietnamplus.vn/tong-thong-hoa-ky-obama-da-toi-nhat-sau-khi-roi-viet-nam/387726.vnp>
<http://www.vietnamplus.vn/tong-thong-hoa-ky-obama-da-toi-nhat-sau-khi-roi-viet-nam/387726.vnp>