You can type these search operators directly into the search box. (Alternatively, you can use the advanced search form to automatically construct your query.)
Containing both "oGoing" and "search". This is the default operator.
Containing the exact phrase "happy hour".
Containing "beer" but not "root".
Containing the hashtag "haiku".
Referencing person "mashable".
Containing "superhero" and sent since date "2009-11-01" (year-month-day).
Containing "ftw" and sent up to date "2009-11-01".
Containing "movie", but not "scary", and with a positive attitude.
Containing "flight" and with a negative attitude.
Containing "traffic" and asking a question.
Containing "hilarious" and linking to URLs.