If encountered a problem, and found the solution. Somebody else beat me to it in June 16. I tried the solution noted and it worked. But I don't understand why and the posted was already closed.
The problem is when doing a search in for example apache logs, and I search for a word "shell" in the request path /wp-admin/..blabla/shell2.php or /wp-admin/..blabla/shell1.php I was expected to do a search like this:
But this would not show the expected result. When I added the digit 2 it showed only the shell2 results.
When I remove the dubble qoutes like the solution from the early post, the result was perfect.
Why is this? And when should I use dubble qoutes and when shouldn't I?