Perhaps you should try some spelling variations:
"der regional economic conditiond." » "der regional economic condition.", "der regional economic conditons.", "der regional economics cognition.", "der global economic conditiond.", "der regionale economic conditiond.", "per regional economic conditiond.", "der regionalen economic conditiond."
"per regionale economic conditions." » "per regional economics conditions.", "per regionalism economic conditions.", "per regional economy conditions.", "der regionale economic conditions.", "per regional economic conditions.", "der regionalen economic conditions."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("per regionale economic conditions.") or ("der regional economic conditiond."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("per regionale economic conditions.") OR ("der regional economic conditiond.")).
• Removing quotes may allow a broader search: (( per regionale economic conditions. ) or ( der regional economic conditiond. )).
• Adding a wildcard symbol may retrieve word variants: (("per regionale economic conditions.") or ("der regional economic conditiond."))*.