In the last roll out of features on d8taplex I included an experimental dynamic filter for data sets. To access it, you expand the graph, click in the filter text box and start typing. As you do, only time series whose names match in part the regular expression you type will be present in the graph.
For example, if you look at this data set on household consumption in the UK and expand it:
if you start typeing 'milk' into the filter box you will see the display dynamically change to just include those variables which contain the workd 'milk'.
In addition, below the filter box, you can see the tokens still present in the variable names (sorted by frequency).
As before, hovering over the time series lines will bring the label of the line to the top of the graph.