Install a Google Custom Site Search widget for your wordpress blog.
The search application allows visitors to search your website or the web from within your site/blog. This means that the user does not have to leave your page or even open a new tab/window. It uses google custom site search to search within your website/blog and shows the result in a bottom docked panel without making the site unresponsive. When the user clicks on any link in the search result the page is opened in new tab.