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Search Syntax
s:d     sort by date
r:uk     uk region
site:     domain search
\ search     first result

r:n     turn off region
!a search     search amazon
site:uk     .uk pages
f:     find files
t:     within title
b:     within body
More explanation...

Meanings of -

Dash - A dash is one of several kinds of punctuation mark.
Hyphen - The hyphen is a punctuation mark used to join words and to separate syllables of a single word.
"-" is the hyphen-minus (0x2D), which may also refer to:
Hyphen-minus - The hyphen-minus is a character used in digital documents and computing to represent a hyphen or a minus sign.
See also
Dash - A dash is one of several kinds of punctuation mark.