Perhaps you should try some spelling variations:
information requirements » nutrition requirements, irrigation requirements, information environments
requirements patents » requirements patterns, requirements papers, requirements water
functions ernst » functions ferns, functions error, functions event
functions egfr » functions esf, functions error, functions euler

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 patents ((functions ernst) or (functions egfr)) lines~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information requirements patents ((functions ernst) OR (functions egfr)) lines.
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