Problem with the lookup api

Hi, I'm having trouble calling the lookup api. I can't get information about the app http://itunes.apple.com/lookup?bundleId=kras-abs.ru.VK-Komfort, but it turns out by http://itunes.apple.com/lookup?bundleId=ru.krasabs.dyhanie. What could be the problem? May be due to the fact that the letters in uppercase?
Problem with the lookup api
 
 
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