Click on the lens, in the right upper corner in Diary. You will be able to sort the list or search a location or in the Name field or the Comment field.

Equipment filter is also available in the Diary, so you can see the total of hours you used a piece of equipment or the fastest speed reached with that.

From the main page, you can also filter by Period, type of sport or type of training.

Click on the orange label "Show all activities..." to remove the filter.