Perhaps you should try some spelling variations:
"ecologies / methodological" » "ecologists / methodological", "ecologies / methodologies"
"etiologic / methodological" » "etiologic / methodologies", "etiological / methodological", "etiologies / methodological", "etiology / methodological"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("ecologies / methodological") OR ("etiologic / methodological")).
• Removing quotes may allow a broader search: (( ecologies / methodological ) or ( etiologic / methodological )).
• Adding a wildcard symbol may retrieve word variants: (("ecologies / methodological") or ("etiologic / methodological"))*.