As per the Google's Transparency Report, Torrentz2.eu website is unsafe for browsing where Google detects a harmful program in it, therefore, they blocks and threaten the user with a red warning banner saying
"Attackers on torrentz2.eu might attempt to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit)."
After reading this, you can either return to the safe page or enter into the page at your own risk. To understand the risk to your security, tap the "DETAILS" button on the bottom left side of the screen.
A user will land on the above like page when they try to access Torrentz.eu from Google Chrome.
This warning message is not only displayed in Chrome web browser but also in the Mozilla Firefox.
From both the popular web browser Google and Firefox, it is clear that Torrentz2.eu tricking you installing programs that harm your browsing experience, as per the Google’s Safebrowsing algorithm. Check the status of Torrentz2.eu site from here. Safe Browsing site status was last updated on Feb 23, 2018, and it can change over time. Come back to check later for new updates.
In the meantime, you should know why the Torrentz2 site operator disagrees over harmful programs flagged on their site. The reason behind their argument is because they serve the ad only to promote a VPN service which is not even a malicious software, they say.
For your note, Google can also flag sites that encourages "social engineering" attempts. This means that if the user is tricked by false claims to take an action like "Your Internet Provider is tracking your torrent activity," says Torrentz2 from their ad serving. The statement used in their ad is absurd which in theory fits the false claim because an ISP won't keep track of user's torrenting habits in general.
Due to this recent blocks by Google, it is not possible for you to directly access the torrent search box. Instead the page you'll land looks like ominous red warning banner.
From the user perspective, if you think the site is trustworthy, bypass the blocks and take steps from the details page (Chrome, Firefox). But the action performed is completely at your own risk.