The exact phrase "basic global warming theory" is incredibly rare to find online. (unless you count my mentioning it, which can be found in literally hundreds of places)
Using site:*.blogspot.com "basic global warming theory" does bring up a few hits, which vary depending on which engine is used. Even using GROK one can't find these results.
I believe this is not just bad behavior by the engines.
Yahoo.com does find this blog no problem. Wow, so does Bing.com now! But Google.com,
No results found for "basic global warming theory explained".