Limiting your results
You can use the same grey refine results column to add more options. Below the date boxes you'll see a link for show more. Click this to see more options, then click the peer reviewed box. Tick this to restrict your search to solid research articles. You can also use this screen to limit your results by publication year, change the date to 2009 to 2014. Click in the blue top section of the window to apply the limits.