Perhaps you should try some spelling variations:
"random dynamical systems" » "quantum dynamical systems"
"quantum dynamic systems" » "quantum dynamics systems", "quantum dynamical systems", "quantum ecodynamic systems", "quantum economic systems"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("random dynamical systems") OR ("quantum dynamic systems")).
• Removing quotes may allow a broader search: (( random dynamical systems ) or ( quantum dynamic systems )).
• Adding a wildcard symbol may retrieve word variants: (("random dynamical systems") or ("quantum dynamic systems"))*.