Perhaps you should try some spelling variations:
regional resilience » regional science, operational resilience
regional conference » regional convergence, national conference, regional differences
regional reference » regional differences, regional convergence
elter regional » better regional, center regional, inter regional

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: "\"((\\"elter ((regional reference) OR (regional resilience))\\") or (\\"elter regional conference\\"))\"".
• Removing quotes may allow a broader search: (( elter ((regional reference) OR (regional resilience)) ) or ( elter regional conference )).