Issue with Search Bar on Reminders app on my iPhone
There's another thread with this same title, but it is 2 years old and closed to new comments.
So, for those who have a problem with Reminders returing 0 results for any search, try this.
Go to: Settings > Search > Reminders > Turn off "Show App in Search"
Back out to "Search"
Go back into "Reminders" and turn "Show App in Search" back on.
This will 'bump' ... 'reset' ... remind the OS to re-index and look at the Reminders app.
Cheers!