In the case of the last one it's immediately above the "Related posts" at the bottom. In all cases, this is a job for ^F. (I was genuinely surprised all the random links cited on the website _still work_, and had to search the page for them.)
It's even freaking funny that "SEO" appears as a Related search at the bottom of that search url. It has nothing to do other than a lot of people (we) come from a SEO article
https://www.google.com/search?q=%22Learn+how+to+solve+a+Rubi...