It’s often frustrating to be in a search center somewhere and not have the ability to get back to whatever portal you came from.  Here’s a handy web part (.dwp file) for search result pages in SharePoint 2013 that displays the site navigation: http://sdrv.ms/1emlSMD.

Here’s the link that led me to it: http://www.eliostruyf.com/display-the-title-row-top-navigation-in-the-search-centers-of-sharepoint-2013/ by @eliostruyf.

While the before/after below is from different sites, I think it illustrates the point. If you add the web part to the web part gallery, it’s a one-time configuration and add so you don’t always have to upload to each page individually. I also found that it needs to be placed above all other web parts on the page to function correctly.

Before

After