Searching vocabulary list to practice

We can now select from a drop down menu from which source we would like to practice vocabulary. This is presented in the sequence of the number of words ready from most to least. It would be great if we could also have it in alphabetical order and/or be able to search for a title or author. When you have read from many sources and want to go back tor practice words from that world, it can be time consuming to find the list. If there are no words ready, the list becomes invisible making it impossible to select that work or author.