Perhaps you should try some spelling variations:
"quantum dynamical system" » "quantum dynamics system", "quantum chemical system", "quantum dynamic systems"
"quantum dynamical systems" » "quantum dynamics systems", "quantum chemical systems", "quantum dynamic systemss"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"quantum dynamical system\") OR (\"quantum dynamical systems\"))".
• Removing quotes may allow a broader search: (( quantum dynamical system ) OR ( quantum dynamical systems )).
• Adding a wildcard symbol may retrieve word variants: (("quantum dynamical system") OR ("quantum dynamical systems"))*.