The "Newly discovered" report is a list of keyword ideas which shows the search queries containing your "seed" keyword (as phrase match) which were added to our database only recently.
We use clickstream data to discover new search queries so some long tail keywords may come in a little delayed.
What's great about this report is it enables finding new or trending keywords which will come in useful in your keyword research.
Currently, both Lite and Standard plan users can see data from only the last month in "Newly discovered" report. Advanced and Agency plan users, however, will be able to see all the data from previous months.
Thus, if you have a Lite or Standard plan, you will need to upgrade to Advanced plan to be able to see the data from previous months within the "Newly discovered" report.