Certain pages do not come up

site:domain.com comes up with strange results

[Trax]

I got a question.
When I do the site:domain.ex command on a site of mine
I get the following results:

domain.com/whatever1.html
Similar pages

domain.com/whatever2.html
Similar pages

domain.com/whatever3.html
Similar pages

whereas the normal listing should be:

TITLE OF DOMAIN
TWO LINES OF...
DESCRIPTIVE TEXT!
domain.com/index.html - xxKB - - Cached - Similar pages

when I search for a certain quote from any of the whatever.html pages I get "did not match any documents".

What could the reason for that be? I see no reason for those 3 pages to be penelized or anything.
Thanks for any comments.