Google made mobile search on Android more useful today. From today, the search results on Android phones will content relevant application results from Android Market also. However, Mobile application search results are available today in the US, with other countries and devices planned for the future.
Details from Google Mobile Blog:
As of today, if you go to Google.com on your iPhone or Android-powered device and search for an app, we’ll show special links and content at the top of the search results. You can tap these links to go directly to the app’s Android Market or iPhone App Store page. You can also get a quick look at some of the app’s basic details including the price, rating, and publisher. These results will appear when your search pertains to a mobile application and relevant, well-rated apps are found.