Perhaps you should try some spelling variations:
"quantum dynamical systems" » "quantum dynamics systems", "quantum chemical systems", "quantum dynamic systemss"
"random dynamical system" » "random dynamic systems"
"random dynamics systems" » "random dynamic systems", "random dynamics system", "random dynamic system", "quantum dynamics 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 system") OR ((("random dynamics systems") OR ("quantum dynamical systems")))).
• Removing quotes may allow a broader search: (( random dynamical system ) or ((( random dynamics systems ) or ( quantum dynamical systems )))).
• Adding a wildcard symbol may retrieve word variants: (("random dynamical system") or ((("random dynamics systems") or ("quantum dynamical systems"))))*.