Find instances of a string in a site
site:techvomit.net intext:"penetration"
Find all pdfs in a site
site:tacticaltech.org filetype:pdf
Resource: https://exposingtheinvisible.org/guides/google-dorking/
Search for emails in xlsx files
intext:@<domain> filetype:xlsx
Search for subdomain takeover reports on h1
site:hackerone.com intext:"subdomain takeover"