The DEMO version only includes 4 pages:
http://mcupr.ac.th
http://mcupr.ac.th/เกี่ยวกับเรา.html
http://mcupr.ac.th/2021/07/19/hello-world.html
http://mcupr.ac.th/author/kittiphunr.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