Help Understanding Google Search Results

When I search for site:domain.com in google, it says that there are 320 pages indexed.

I went through the listings on google for my domain and as I click next, I eventually get a message Results 137 - 137 of 137 from domain.com. (0.11 seconds)

Why is it when I do a site command it says there are 320 pages indexed, but when I go page by page through google, it shows only 137?

 

I am pretty sure it says you are viewing 1-(some number) of ABOUT (some other number) so its not exactly that many.

 

The rest of your pages are in supplemental results probably.

 

yes i think your remaining pages are supplemental results.

 

im not sure but do u get that option at the end of the results...(would u like to see more pls click here?) I could be wrong

 

That's kind of what I was thinking, that they were in supplemental.

These are 320 articles that I have written myself, so there is no duplicate content. I am also using the All in One SEO Pack plugin.

How do I get the 200 or so other posts out of supplemental hell?

 

I also faced the same problem many time . Please give me any authentic answers not only thought or think bases