[Q] Using some more internal memory, is it possible ? topic

As you can see most of the internal memory saved by system and cache is free.
System : 1.95 GB free of 2.65 (73% free)
Cache : 1.96 GB free of 1.99 GB (98% free)

Is there any way(preferably safe) to use at least some more from this wastage of space ?

I am using Samsung galaxy s4 gt-i9500, with cyanogenmod 11 20140317 nightly 4.4.2 KitKat With permissive selinux