Hello,
Could you please tell me which of two search engines are you talking about?
First one can be found while browsing records, on the right side, right above the table.
Second is the global search - located top-right side of the epesi, next to logout button.
Currently none of those engines are modifiable without tinkering inside database (first case) or the code (second), but there are plans for extending browsing records functionality (custom table views) - along with the search of course.
What would be the desired behavior you wish to see?
Kind regards,
Arek