Google search for “-1” returning no results [duplicate]

How come that searching for “-1” on Google Search Engine returns:

Your search – -1 – did not match any documents.
Suggestions:
Make sure that all words are spelled correctly. Try different keywords. Try more general keywords.

Aren’t there really results for -1?

Answer

The - is used to exclude something from a search. This is usually negated if you quote everything, so technically "-1" should work.

That said, Google tends to ignore negative numbers, so the best alternative is to write out the minus.

If you search for minus 1 or negative 1 Google will actually give results that include -1.

Attribution
Source : Link , Question Author : quant , Answer Author : serenesat

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