The DEMO version only includes 4 pages:
http://vesinhgiabaohoanmy.com
http://vesinhgiabaohoanmy.com/ve-sinh-cong-nghiep.html
http://vesinhgiabaohoanmy.com/giat-tham.html
http://vesinhgiabaohoanmy.com/phun-khu-trung-khu-khuan-sat-trung.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page