Q: Some iTunes purchases not showing

Are you looking for them under the Purchases option that appears under the Quick Links section in the iTunes Music Store?

If so, are you signed on with the same Apple ID that you originally used to purchase them?

Cheers,

GB

What about the path? Where are you looking for these purchases?

GB

And then what? Are you looking in the Music Store? Did you click on Not in My Library?

Have you checked the iTunes Store to make sure the items are still available?

Cheers,

GB

It's possible to hide iTunes Store purchases.  Those missing purchases may be hidden.

Hide and unhide purchases in iTunes or iBooks on your Mac or PC - Apple Support