If you forgot about any of these terms, go to the Advanced Search page and be happy.
Either/or -- search for pages containing any of phrases
foo | bar | fum | baz
foo OR bar OR fum OR baz
Quotes -- search for exact phrase in quotes
foo "bar fum" baz
Not -- exclude --prefixed word from search
foo -bar fum
Similar terms -- find similar terms for the ~-prefixed one
~nice foo bar
Wildcard -- use * for a word you don't know
foo * baz
Similar terms -- find similar terms for the ~-prefixed one
~nice foo bar
Definitions -- find definition with define: prefix
define:foo
Range -- find range of numbers
foo 1999..2014
Site specific -- find only withing a certain website
site:foo.org bar
Linked -- find pages that links to url
link:foo.org
Related -- find pages similar to url
related:foo.org
Files -- find specific filetypes
filetype:pdf foo
Calculator -- use the +, -, *, / and () for equations
(1+2)*3/(4-5)
Weather -- use the weather prefix with name of the city
weather London
Unit converter -- convert something to something, or something in something
1 usd in pln
Unit converter -- convert something to something, or something in something
1 usd in pln