<https://vnafood.com/course/family-and-friends-5-class-book-2/#product>
<http://schema.org/description>
"➤ Preview the content (pdf, audio track) in the description below\r\n➤ The projector function works below with member sign in (register account when purchasing a projector feature product)\r\n➤ Or choose products to download package here\r\n✔ To purchase individual products, simply click the Add to basket button\r\n(Browse products by click Category below or use search box)"
<https://vnafood.com/course/family-and-friends-5-class-book-2/>