Perhaps you should try some spelling variations:
international electron » international education
emerging academic » changing academic, emerging systemic
testing academic » writing academic

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: "((international electron) OR (internal energy)) law: an ((emerging academic) OR (testing academic)) (discipline" or disciplines").
• Removing quotes may allow a broader search: ((international electron) or (internal energy)) law: an ((emerging academic) or (testing academic)) (discipline or disciplines ).
• Adding a wildcard symbol may retrieve word variants: "((international electron) or (internal energy)) law: an ((emerging academic) or (testing academic)) (discipline" or disciplines")*.