Search in photos not including all photos

iPhone 14 Pro Max, 18.7.1, for some reason, the search function in photos is not returning all photos it should. For instance, a search for “December”, returns far less photos than I have taken in all Decembers. I charge the phone each night, so it is locked, charging and connected to Wi-Fi. It would appear the indexing that is supposed to be automatically happening is not occurring. Any ideas? Yes, I have rebooted, the last IOS update was a week or more ago and have charged for 7-8 hours multiple times since then. Lastly, a search in Google photos for the exact same thing returns almost 1000 photos, in the iPhone photos, it returns 99. Thanks for any help.