What vendors do you source from in Etilize?

We are having an exception hard time with pulling up enough results when we do an etilize search.  Our settings have been reviewed a thousand times and support says they are correct.

We source from Ingram, Scansource (never see any results even when searching the linecard inventory), CDW (Sell says this integration is broken now) and Amazon for retail (Again, never see results when hitting the CLOUD icon).

So, my question is - What vendors do you source from in Etilize that you have had some good results return?  And HOW are you searching (Do you look up the part numbers in the vendor website first or are you searching for description..?).  Thanks everyone.