It lasted for a while, then apparently Google started to filter those sites; not the domains though as some of them resurfaced much down the first page. I highly doubt it's on my side as I'm using Waterfox with the usual well known privacy oriented addons, some of which could block suspicious pages from loading but none of them adds content that wasn't in the search results. I just repeated the same search and got these:

http://2.8.combatarms-game.de/pna_x_block_diagram.php

https://two.ineedmorespace.co/2020_radar_block_diagram.php

http://3.17.tierarztpraxis-ruffy.de/pna_x_block_diagram.php

I had to take out doubles as some of these urls were returned identical although I was clicking on different images.

I can reproduce his results instead, using the same search terms. The first results do actually look legit, but after the first 10-20 I see those useless links too. This however doesn't seem to be new, at least for me... I've seen that already when searching manuals for example.

How does it happen on his end, when it is a google search?