How to get a google maps search to return results only from the currently visible region?

Is there an easy way to use the google maps searchbar to only recieve results from the currently visible region, or a set of coordinates?

I've been googleing for a while and can't seem to find a simple solution for this which I guess should be used by many sites.

From stackoverflow

• You can search in two ways
  1) In a bounding box
  2) In a circle of certain radius
  

  I think it is possible as it says here

  Hope this helps
  Myra