The Google AdWords data source works in a way that it always collects data for the last 31 days on the reports you've selected. It's entirely possible to add additional reports (like the ones you haven't chosen before) after a successful collection.
As an example, let's say that you've collected data from two reports (the checked ones), and you'd like to add at least one from the unselected ones.
You can do that, but the difference is that the data you'll collect for these additional reports won't be as old as the ones you've previously collected from.
In case you do need to collect more historical data, please contact our support team with your data source's title and the date which you wish to collect the data from. Note that recollecting historical data will affect all the selected reports, so it is recommended to create an additional data source to avoid the collection of data that was already collected.