Perhaps you should try some spelling variations:
"resonance research studies" » "resilience research studies", "research research studies", "finance research studies", "resonance research study"
"resources research studies" » "research research studies", "resources research study"
"resource research studies" » "resource search studies", "source research studies", "research research studies", "resource research study"

Try widening your search to All Fields.

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: (((("resource research studies") OR ("resonance research studies"))) OR ("resources research studies")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"resource research studies\") OR (\"resonance research studies\"))) or (\"resources research studies\"))".
• Removing quotes may allow a broader search: (((( resource research studies ) OR ( resonance research studies ))) or ( resources research studies )).
• Adding a wildcard symbol may retrieve word variants: (((("resource research studies") OR ("resonance research studies"))) or ("resources research studies"))*.