Google offers a few preset search filters for time — past hour, day, week, etc. — but if you want much fresher information, you can tweak the URL. This will limit results so see what's happening in more of a near real-time flow of information.
In the address bar, look for the
qdr: parameter, e.g.:
https://google.com ... &output=search&tbs=qdr:h&tbo=1
The "h" here stands for hour. Substitute the "h" or whatever comes after the
qdr: with either n for minutes or s for seconds and the number you want to limit your search by. So, for example, you could make it
qdr:n10 as I did here to bring up information indexed in the past 10 minutes.
This is a trick we've mentioned previously in conjunction with a handy bookmarklet that did the real-time searching for you so you didn't have to tweak the URL, but unfortunately the bookmarklet seems to have disappeared. Paul Anthony's post at the WebDistortion blog reminded me again of this trick to bring back Google real-time searching, in a sense.