You can find objects by browsing your libraries or by searching for them by name in the Object library.
Browsing Libraries
In the Import menu, swipe left or right on the Object Library panel to scroll through your available objects.
Searching by Name
In the 'Market' or 'My Objects' tabs, pull down from the top of the menu to reveal the Search bar. Type the object's name to find it.
Watch our video tutorial for a demonstration: