Why doesn't "find .|grep aword" work?

[km4hr]

Do pipes work in cygwin in the usual way?

Why doesn't the following command works on HP Unix? Why not cygwin?

find .|grep "hello"

I get no output from this command even though I'm sure the word "hello" is
in some files.

What I want this command to do is find all files in all sub-directories and
pipe the output to grep. Grep then looks in each file for the word "hello".
The names of files that contain the word "hello" should be returned.

thanks.
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