Bajaj Auto — Bag lost

Address:

Samayvihar sector-13 rohini

I lost my red color backpack in that auto. My backpack has all my bank documents and especially some very important papers related to my busniess. It has my address proof and contact details written all over it.
I personally went there and inquired all the auto stands around that area, to find that particular auto. But hard luck.
Can anyone suggest me some good way to trace it back ?? If anyone found it, please return it.At savhdeva public school or naiwala krol bagh