Currently in Creo Illustrate 5.1 you can apply a filter , f.e. *bolt*.
But there is no possibility to select them all at once (ctrl+a) of a list selection (shift - select top/end). Because this selects all the "Siblings"/ other parts in sub-assemblies as well, they are just hidden by the "click to expand arrow".
Please make it so that we can easily filter and select in a logical fully functional way.