find a folder nested in a folder

I'm not quite sure of what you are looking for but the following will list all directories named "Virtual Box" starting with the deepest nested to the least.

find /Volumes -type d ! -name Volumes -name "Virtual Box" 2>/dev/null

EDIT: OK, understanding your requirement a bit better we can use the path predicate to match outerfolder/innerfolder

find /Volumes -type d -path '*outerfolder/innerfolder'

Assuming innerfolder needs to be directly within outerfolder:

find /Volumes -type d -name "outerfolder" -exec test -d {}/"innerfolder" \; \
                                          -exec echo {}/"innerfolder" \;

(formatted for readabiliy, you can also put everything on one line and remove the trailing \ from the first line)