Operators

Operators narrow a search before it runs. They combine freely with each other and with ordinary phrases, so site:de depth:all "math.min.js" is a single query.

depth: - internal pages

By default a search covers home pages only. depth: reaches the internal pages that have been indexed, one level at a time up to five, or all of them at once.

depth:all "math.min.js" - home pages and every indexed internal page
depth:0 "math.min.js" - home pages, the default
depth:1 "math.min.js" - first level of internal pages

ip: - address or subnet

Find sites served from one address, or from a class C subnet by putting a * in the last position.

ip:160.153.136.3 "ga('create',"
ip:160.153.136.* bootstrap

filetype:css and filetype:js

Search inside linked stylesheets and scripts rather than in the page that loads them.

"stackoverflow.com/questions" filetype:css
"stackoverflow.com/questions" filetype:js

These two are an older feature and work on the website only - they are not part of the API.

Next Regular expressions