Refine web searches – Google Search Help

Refine web searchesYou can use symbols or words in your search to make your search results more precise.Google Search usually ignores punctuation that isn’t part of a search operator.Don’t put spaces between the symbol or word and your search term. A search for will work, but site: won’t.Common search techniquesSearch social mediaPut @ in front of a word to search social media. For example: @twitter.Search for a pricePut $ in front of a number. For example: camera $400.Search hashtagsPut # in front of a word. For example: #throwbackthursdayExclude words from your searchPut – in front of a word you want to leave out. For example, jaguar speed -carSearch for an exact matchPut a word or phrase inside quotes. For example, “tallest building".Search for wildcards or unknown wordsPut a * in your word or phrase where you want to leave a placeholder. For example, “largest * in the world".Search within a range of numbersPut .. between two numbers. For example, camera $50..$100.Combine searchesPut “OR" between each search query. For example,  marathon OR race.Search for a specific sitePut “site:" in front of a site or domain. For example, or for related sitesPut “related:" in front of a web address you already know. For example, details about a sitePut “info:" in front of the site address.See Google’s cached version of a sitePut “cache:" in front of the site address.Related content from our help communityAnswered by community member bluequoll : Why was the Plus Sign (+) removed as a Search Operator?

Source: Refine web searches – Google Search Help