Google recently started showing more results for each domain that was searched. For example if you perform a search for google dot com for example, you will see www dot google dot com, google dot com/xhtml, www dot google dot com/analytics and so one. If you notice that each of the first three results Google is displaying for the search "google dot com" is showing pages / URL's from Google.com and not google dot com, xyz dot com and abc dot com. Google has been changing this formula for quite some time and have recently decided to add even more results for the domain you are searching for. Reason being is that Google believes that they should give their users the most relevant feedback after conducting a search and they have the right idea. They have also added a "More results from google dot com " link under the domain / website you just did a Google search for. If you click More results from Google it will confirm to the search engine that this is what you are looking for, then you will be provided with another results page with even more of relevant links to what you were searching for. These kind of features are what makes Google the superior search engine over Yahoo, Bing and others.
If you would like to see another example of what I am talking about you can do a Google search for site:www dot google dot com in order to see the same results displayed by Google for a deep search on a particular domain. Also Google has other interesting search commands that can help an experieced search engine marketer or just a every day user. Other Google commands can be found at this link
"http://www.google.com/support/websearch/bin/answer.py?hl=en&answer=136861" additional search commands can be found here: "http://www.searchcommands.com/google/" I hope this was a informative enough article that will make you go and try some of these out for yourself in order to make your internet and Google using experience a better and more accurate search tool.
Please let me know if you have any questions and I will be more than happy to send you more information regarding Google commands and useful SEO tips.