Perhaps you should try some spelling variations:
"dynamisches system" » "dynamischer systeme", "dynamische systeme", "dynamical system"
"dynamics systems" » "dynamics system", "dynamical system", "dynamischen systems"
"dynamic systemss" » "dynamic systemic", "dynamics system", "dynamic systemsusing", "dynamical systemss"
"economic systems" » "economic sectors"
"dynamic system" » "dynamical system"
"dynamic systems" » "dynamical 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: (("dynamical systems") OR ((((((("dynamics systems") OR ("dynamic systemss"))) OR ("dynamic system"))) OR ((((("dynamic systems") OR ("economic systems"))) OR ("dynamisches system")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dynamical systems\") or (((((((\"dynamics systems\") or (\"dynamic systemss\"))) or (\"dynamic system\"))) or (((((\"dynamic systems\") OR (\"economic systems\"))) or (\"dynamisches system\"))))))".
• Removing quotes may allow a broader search: (( dynamical systems ) or ((((((( dynamics systems ) or ( dynamic systemss ))) or ( dynamic system ))) or ((((( dynamic systems ) OR ( economic systems ))) or ( dynamisches system )))))).
• Adding a wildcard symbol may retrieve word variants: (("dynamical systems") or ((((((("dynamics systems") or ("dynamic systemss"))) or ("dynamic system"))) or ((((("dynamic systems") OR ("economic systems"))) or ("dynamisches system"))))))*.