Google Search Console for keyword research

Awesome trick for finding your gaps in content. The original post on reddit is here:
Google search console for keyword research is super powerful [archive]

For my own copy-paste convenience, the regex expression is:
(?i)^(who|what|where|when|why|how)

Open-ended:
(?i)^(.*who.*|.*what.*|.*where.*|.*when.*|.*why.*|.*how.*)

Few notes:

• I didn't find 'Search Results', instead I clicked on 'Performance', chose 12 month period and added query by clicking on the '+ New' button.
• One of the commenters is giving an additional tip here to cross-reference the impression and click data from Search Console with Google Trends.
• One of the commenters is suggesting to use an 'open-ended' variation of regex here. In my test case I haven't noticed any difference.
• This will not show you the keywords that your content is not ranking for. For that kind of research you need to use other tools, e.g. Google Ads.