Perhaps you should try some spelling variations:
information requirements » nutrition requirements, irrigation requirements, information environments
nutrient requirements » nutritional requirements
projected functions » projects functions, projected wavefunctions, proposed functions
functions classes » function classes, functional classes, functions class
classes based » class based, classes asia, classifiers based

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) or (nutrient requirements)) projected functions classes based~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((information requirements) OR (nutrient requirements)) projected functions classes based.
• Adding a wildcard symbol may retrieve word variants: ((information requirements) or (nutrient requirements)) projected functions classes based*.