Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
properties functions » processes functions, properties functionality, properties affecting
projected functions » projects functions, projected wavefunctions, proposed functions
shalev current » scale current, hall current

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

• Performing a fuzzy search may retrieve terms with similar spellings: irrigation requirements ((projected functions) or (properties functions)) shalev current~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements ((projected functions) OR (properties functions)) shalev current.
• Adding a wildcard symbol may retrieve word variants: irrigation requirements ((projected functions) or (properties functions)) shalev current*.