The procedure provided by "DDjac" WORKED for me.
DDjac posted this procedure on Jan 19, 2022 7:05 AM in response to Lakeaire.
DDjac's posting is in the "Apple Community" under the topic "Can't search in iCal".
Hopefully, this link/URL will take you to it:
https://discussions.apple.com/thread/253424643?answerId=256707361022&page=2
After doing every step in that procedure
(exactly like it's author stated, including selecting the entire harddrive MacIntosh HD),
my calendar searches are now working!
Apple's "Calendar.app" (version 11.0), on my iMac (M1-chip),
running Mac OS Monterey 12.3.1, has now started to correctly search my calendar.
It is no longer returning the ridiculous "No Results".
I say started because it will take awhile for Spotlight to re-build it's indexes
(since you MUST pick the entire harddrive MacIntosh HD to make this procedure
work successfully).
For your reference/convenience, here is DDjac's posting:
Ok, I found a workaround in some other thread and it worked for me: Rebuild the Spotlight Index
Apple already published this workaround for another issue and this procedure also rebuilds the calendar search index:
Rebuild the Spotlight index on your Mac - Apple Support
Basically it works like this:
open System Preferences, then click Spotlight
click the Privacy tab
add the main harddisk of your Mac to the list of items which should be excluded from the indexing process.
close System Preferences
reboot the mac
then: do the same steps and remove the harddisk form the list
reboot the mac again and the rebuild the spotlight index process starts (internally)
As I understand, these steps "force" to rebuild the spotlight index which then includes the calendar entries.
The rebuild takes a while so don't expect to get search results immediately.
But this procedure worked for me!
[AND IT WORKED for me (TinkerTots) on 5/17/2022, on my iMac (2021, M1 chip), running Mac OS (Monterey) 12.3.1, with
Apple "Calendar.app" version 11.0.]