Using the search option comes with some difficulties:
1. It only searches from the day forward where I am in the calender right now. I do not think this makes sense, as I will have to know when this event might be, and in case of a passed event this could lead to difficulties.
2. Like the agenda view the serch only includes events during a period of 60 days (if not changed). I think this comes with similar problems as 1.
3. The search is sensitiv to capital letter, so if I do not remember exactely how I wrote an event I am not going to be able to find it with the search function.