Perhaps you should try some spelling variations:
information requirements » nutrition requirements, irrigation requirements, information environments
denoising definitions » sensing definitions, identifying definitions, sensing definition
evolving definitions » evolving definition, working definitions, varying definitions
health alert » health art, health allergy, health aspect

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information requirements ((denoising definitions) or (evolving definitions)) health alert~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information requirements ((denoising definitions) OR (evolving definitions)) health alert.
• Adding a wildcard symbol may retrieve word variants: information requirements ((denoising definitions) or (evolving definitions)) health alert*.