How to search for weapon camo in personal shops?

Hello! Whenever I try to search for different weapon camos in the personal shop, nothing comes up. When I type in any of them, it says "unable to find any items that match your search." I can't see a single weapon camo in the personal shops. Is there something I have to do to enable being able to find and buy weapon camo?

Many of the Camos that are currently in the game cannot be sold on the Personal Shops as several have come from the Mission Pass or are only available via NPC exchanges.

To search the ones that are available, it is usually easier to just do a category search rather than a name search.