From the Mileage list you can:
Search for a trip: On your mobile, pull down the mileage list to enable the search function or use the search bar on your desktop.
View a trip: Select the item to open the trip.
Filter: By tapping on the filter icon at the top of the screen you can create filters to narrow down your search. Slide across the options to select your required period.
Your applied filters are always cached so you always return to the same filtered list.