ITunes isn't showing my bought songs?

I frequently buy music off of my iPhone 4s because it's more convenient and I don't have to wait to transfer music. But I just checked my iTunes on my computer and none of the songs I've bought on my iPhone are shown bought on my computer.

I'm using the same account and the most recent iTunes. I'm using the same credit card to buy songs as well. I've authorized my computer and iPhone.

Does anyone know how I can fix this?

Check the top of the screen menu and find "Available downloads"
That should add them to your library.
Check your computer and iTunes settings, they should add automatically and they didn't

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