Question

Which search engine does google uses to query results?

Answer 1

Crawl used for it . It creat indexing

Answer 2

PageRank does google uses to query results .

Explanation:  

Google uses PageRank, a trademarked algorithm, which accredits a relevance score for each Web page. In Google search, SERP term stands for Search Engine Results Page.

Google search returns the search result called "PageRank" is a priority rank-based system.

The Google search also gives several distinct choices for customized search, such as symbols to include or exclude, specify certain search behavior, and very specialized interactive experiences like weather forecasts, flight status, package tracking, unit and time conversion, word definitions, etc.