Google Trends is based on Google Search. It only displays the relative combined search volumes from all countries that share a particular language. It is possible to refine the main graph by region and time period. It can help you see that you are on track and find new tracks for your copy writing. On September 27, 2012, Google merged Google Insights for Search into Google Trends.
You can easy save your favorite search-string through html-snippet. Place the Snippet Script direct in your web-page makes it easy for you to look at them when ever you like. Here below we have saved a query about +marketing +content +share +knowledge and paste the Google Snippet Script on to this webpage.