2014/1/3 Petr Kadlec petr.kadlec@gmail.com
Thank you, it works. (It was hopeless for me to find in special:Allmessages.)
Try going to translatewiki.net and writing the searched text into the search box on the main page:
http://translatewiki.net/w/i.php?title=Special%3ASearchTranslations&quer...
That's a good idea. But I don't know why Special:allmessages unsearchable is. It would be better to have the the solution within MediaWiki itself.