The DEMO version only includes 4 pages:
http://moitruongchieuduong.com
http://moitruongchieuduong.com/category/tu-van-moi-truong.html
http://moitruongchieuduong.com/category/thiet-ke-thi-cong.html
http://moitruongchieuduong.com/category/xu-ly-chat-thai.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