How can i make an advancement trigger when the player has more than one item in their inventory?

Little bit of a long title but it says it all. I have 3 trigger items, and I want the player to get an achievement when they have at least one of each trigger item in their inventory. 

Here's how I've done it (Which doesn't work :P)

IF - Has [T1] AND Has [T2] AND Has [T3]

DO - Award Achievement

https://imgur.com/a/L1WRmmf

Here's a link to a screenshot of my workspace. Not sure if it'll work tho

Thanks for any help you can give