Search Operator for a better web search

Here are the best operator for a search engine to refine your research : |=== |Operator |Function |site: |search on a specific website (ex : site:en.wikipedia.org |inurl: |search for a url containing a specific keyword |allinurl: |search for multiple words in the url |filetype: |search for a specific filetype like pdf/docx/csv/ppt etc... it is similar to ext: |related: |search for sites related to a given domain |intitle: |search for pages with this word in the title |allintitle: |search for multiple words in the title |intext: |search for a word in the content of the page |allintext: |search for multiple words in the page |before: |seach for results before a particular date (ex: before:2011-09-13) |after: |search for results after a date |loc: |find results from an area ex: loc:"Belfort" restaurant |`-` |ignore pages using that specific keyword |"" |require an exact match |~ |find similar keywords (ex: ~car) |OR |ex: fun OR amusing |AND |ex: jobs AND well paid |`*` |wildcard |() |group multiple searches |===