Search Engine Operators

Bing

Bing Search Guide: https://www.bruceclay.com/blog/bing-google-advanced-search-operators/

Example	What It Does
contains:gif	Keeps results focused on sites that have links to the file types that you specify
ext: docx	Returns only web pages with the file extension that you specify
filetype: pdf	Returns only web pages created in the file type that you specify
intitle: 2019 inbody: wimbledon	Returns only web pages that contain the specified term in the metadata
ip: 207.241.148.80	Finds sites that are hosted by a specific IP address
Language: fr	Returns only web pages for a certain language (requires the language code)
loc: US	Returns only web pages from a specific country/region. To focus on two or more, use a logical OR to group them (requires the country or region code)
prefer: history	Adds emphasis to a search term or another operator to help focus the results
site: site.com	Returns web pages that belong to a specific website. Also works for TLDs (such as site:edu)
feed: Technology	Finds RSS or Atom feeds about the search term
site: site.com hasfeed: world	Finds web pages that contain an RSS or Atom feed on a website for the terms you search for
url: site.com	Checks whether the domain or URL is in the Bing index

Source: https://www.lifewire.com/bing-advanced-search-3482817

Google

Advanced Search Page: https://www.google.co.uk/advanced_search

Linked examples: https://moz.com/learn/seo/search-operators

PDF Guide: http://www.googleguide.com/print/adv_op_ref.pdf

Google has a large variety of search operators. It would be advisable to download and consult the above linked PDF.

DuckDuckGo

Search Syntax: https://help.duckduckgo.com/duckduckgo-help-pages/results/syntax/

Example	Result
cats dogs	Results about cats or dogs
"cats and dogs"	Results for exact term "cats and dogs". If no results are found, we'll try to show related results.
cats -dogs	Fewer dogs in results
cats +dogs	More dogs in results
cats filetype: pdf	PDFs about cats. Supported file types: pdf, doc(x), xls(x), ppt(x), html
dogs site: example.com	Pages about dogs from example.com
cats -site: example.com	Pages about cats, excluding example.com
intitle: dogs	Page title includes the word "dogs"
inurl: cats	Page url includes the word "cats"
!safeon	Append to search to turn on Safe Search
!safeoff	Append to search to turn off Safe Search