Weird behaviour

I am using the WordPress plugin “Search and Replace”, and I don’t understand how wildcards work.
This is an example.

Looking for ‘2015/11/logo_aadc_fb.png’ I get 20 results in 37 tables (see screenshot below).

When I look for ‘2015/11/*.png’ I should get at least the 20 results I got earlier, but I get only 8.
What am I missing?