Hey @Hassan_Nadeem thank you for the screenshots. I believe you are almost there. If you have more than one list you will have to enable search on all of them for it to work. Also it only works with the details of the inline lists or the details of that row (the next page when you click show details on an inline list)
Kindly check your other lists to see if show search bar is enabled and fill in the details with your search terms either on the inline list itself or in plain text on the details page when you click through.
I did a quick search 
and found this by @Robert_Petitto
There may be some updated techniques