I got the category links and the subcategory links as the part of description for site: search of my site and in the bottom it was given as

"In order to show you the most relevant results, we have omitted some entries very similar to the 8 already displayed.
If you like, you can repeat the search with the omitted results included. "

Is this a penalty, If it is, then

Shall I just change the CSS and HTMl in such a way that the content is crawled first.

I ve recently seen a drop in the traffic in the site so can this help.

Thanks,
Ravi.