@stefanak
The only setting in COPS (that I am aware of) is (in config_local.php):
Code:
/*
* WARNING NOT READY FOR PRODUCTION USE
* Make the search better (don't care about diacritics, uppercase should work on Cyrillic) but slower.
* 1 : Yes (enable)
* 0 : No
*/
$config ['cops_normalized_search'] = "0";
You can try, but in my experience COPS search is not case sensitive.