After displaying the activity list on Garmin Connect, I have been unable to search by Keyword, using a search text that I know is part of an activity name. I think I recall this working some time ago, but now it is not working!
There is a current issue with the search function of Garmin Connect. This is being worked on and will hopefully be fixed in the very near future. This issue is being discussed in this thread.
Closing this thread, and we will update the other thread when there is more information.