Control time frame of Google search result

Let's say you want to search for result within the past 2 minutes:

1. Google the keyword(s) like usual, for example "nokia n97"
2. You will see the URL at browser address bar as below (or similar):
   
   http://www.google.com.my/search?hl=en&q=nokia+n97&btnG=Search&meta=
   
   
3. Add &tbs=qdr:n2 at the end of the URL and press Enter. qdr means Query Date Range while n2 means 2 minutes. Now you get the result within the past 2 minutes.
4. Other time setting includes:
   1. s: seconds
   2. h: hours
   3. d: days
   4. m: months
   5. y: years

From Techbang