I search on Google all the time  ... in searching a popular word like
Dogs it show search results of 17,600,000.   I have been total that
this is the number the Google has indexed.  But if I want to see
number 1,000 or 100,000 or 1,000,000   the actual displayed amount is
much less between 500-600 results.

How do can i expand me search to any number of results or results not
in the 1st 500??

webinfo...

I hesitate to post this as a formal answer, since there is no way
to satisfy your interest in seeing more than 999 results. This is
the limit of results which Google will show.

If your search shows 17 million results, and only displays the
first 5-600, you can expand the results, to the limit of 999,
by clicking the link at the bottom of the last page of listed
results, which says "repeat the search with the omitted results
included". This will display up to 999 results, but, quoth the
raven, never more.

If you're satisfied with this answer, which is the only one
there is, I'll be happy to post it as a formal answer and 
collect the fee.

sublime1-ga