When you perform a search, Curiosity uses a combination of algorithms to rank and sort your results to be as relevant for you as possible. This is also configurable by your administrator, if you think some type of data should be more relevant, click on the feedback button to let your administrator know about it!
You can change the sorting from relevance to sorting by date. To do so, click on the icon on the upper right corner of your screen:
And choose one of the options:
Relevancy is the default sorting algorithm, with most relevant results displayed at the top:
Newest will show most recent documents on the top:
And finally Oldest let you travel back in time and see the oldest results from your data: