Perhaps you should try some spelling variations:
converting propositional » constraints propositional, checking propositional, modeling propositional
requirements converting » requirements concerning, requirements collecting, requirements concluding
nutrient requirements » nutritional requirements
array sharing » array string, arrays bearing, array imaging
array arcing » array forming, array probing, array using

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

• Performing a fuzzy search may retrieve terms with similar spellings: nutrient requirements converting propositional ((array sharing) or (array arcing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nutrient requirements converting propositional ((array sharing) OR (array arcing)).
• Adding a wildcard symbol may retrieve word variants: nutrient requirements converting propositional ((array sharing) or (array arcing))*.