Problem with Youtube API. Youtube Channels : list gives out totalResults only 3 (I need 4) [closed]

I’m new with work with Youtube API

Get from Youtube Developer API JSON result. Put in string 4 ID’s different channels (or divided by “,”, or in 4 new string).But in JSON console I get ONLY 3 items !!!What ?

I use Youtube Channels : list.And in JSON totalResults ALWAYS only 3 (I need 4)

Give a hint please!Thanks in advance!