Perhaps you should try some spelling variations:
"gpr operational resilience" » "gpr operational excellence", "gpr operational efficiency", "gpr operational experience", "der operational resilience", "air operational resilience", "war operational resilience"
"elgar regional reference" » "elgar regional conference", "elgar regional differences", "elgar regional convergence", "elter regional reference", "algarve regional reference", "war regional reference"
"elgar regional science" » "elgar national science", "elgar regional scale", "elter regional science", "algarve regional science", "war regional science"
"elgar regional resilience" » "elter regional resilience", "algarve regional resilience", "war regional resilience"

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: (("elgar regional reference") OR ((((("elgar regional resilience") OR ("elgar regional science"))) OR ("gpr operational resilience"))))*.
• Removing quotes may allow a broader search: (( elgar regional reference ) or ((((( elgar regional resilience ) or ( elgar regional science ))) or ( gpr operational resilience ))))*.