Perhaps you should try some spelling variations:
"innate immunity : host recognition and response in health and disease" » "innate immunity : robust recognition and response in health and disease", "innate immunity : gait recognition and response in health and disease", "innate immunity : set recognition and response in health and disease"
"Innate immunity : text recognition and response in health and disease" » "Innate immunity : object recognition and response in health and disease"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("innate immunity : host recognition and response in health and disease") OR ((("Innate immunity : text recognition and response in health and disease") OR ("Innate immunity : target recognition and response in health and disease")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"innate immunity : host recognition and response in health and disease\") or (((\"Innate immunity : text recognition and response in health and disease\") OR (\"Innate immunity : target recognition and response in health and disease\"))))".
• Removing quotes may allow a broader search: (( innate immunity : host recognition and response in health and disease ) or ((( Innate immunity : text recognition and response in health and disease ) OR ( Innate immunity : target recognition and response in health and disease )))).
• Adding a wildcard symbol may retrieve word variants: (("innate immunity : host recognition and response in health and disease") or ((("Innate immunity : text recognition and response in health and disease") OR ("Innate immunity : target recognition and response in health and disease"))))*.