Firstly , I read the docs of getting indexed and as it said I waited for the asset I published "PixelArt TileSet by yumo" to appear on the search for 3 days  , 

It appears when I search in Google but not in the search of itch io 

And the link works perfectly 

Yes, that's right. As explained in lots and lots of topics, sometimes it takes longer, especially for your first project. Please wait.

Closing thread, page appears to be indexed with no issues.