Google offers a simple form and an advanced search form to exclude words or search for complete expressions
Google's quality comes from its ability to show first the pages deemed most relevant in general and most relevant to a particular search. Google sorts found documents according to: more
quality measures of the site in general and also of each page (consistency of meta-information with the visible text of the page for example). There is little or no documentation of these measures.
a measure of the weight of each of the indexed pages: this is the PageRank algorithm

According to Microsoft, this search engine innovates in terms of algorithms, which gives more relevant results, better organized and classified into thematic headings1. In addition, new features have been added, such as price comparators2 more

Yahoo! decides to give Internet users the ability to select and annotate pages and websites they find really interesting (including in some cases merchant sites). By doing so, with tools like My Web or Yahoo Favorites, not only can Internet users easily find those pages they liked, but they can also share them with other Internet users using My Web.more

This search engine will look for its information in the APIs of the Yahoo, Wikipedia, Wolfgram, Bing and Blekko engines. And good for your privacy: it does not record your IP and personal information! more

This search engine crosses the results of other engines and social networks, without storing cookies and without "tracking" you.more

It is a multi-media search engine. It provides information on print, web, radio and TV.more

Ask Jeeves' original idea was the engine's ability to answer questions asked in natural language. It was the first question and answer engine on the Internet. It accepts a wide choice of natural language questions (English, German, Spanish, French, Italian and Dutch), and the classic keyword search is more intuitive and easy to use than other search engines.more