Why google has so many urls in just for search bar page?

While making django bookmark app, I realized that google searchbar page has so many urls.

Like, no http://ift.tt/RlElw1,

http://ift.tt/2DGdER9, http://ift.tt/2CxDyqU

It's different at

?gfe_rd=cr&dcr=0&ei=et5JWq2NNoz02QS3vKH4DA

and

?gfe_rd=cr&dcr=0&ei=jd5JWrCTI4z02QS3vKH4DA.

Questions:

1. Why these are different?

2. Is there good way to determine that 2 urls are pointing the same pages on django server? or using other python packages?