Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements using » requirements modeling
using dimension » using dimensional, missing dimension, using dispersion
bioarrays » bioardays, bioarray, bioarways
rays » days, ray, ways

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 using dimension (((bioarrays or bioarray) from) or (rays from))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements using dimension (((bioarrays OR bioarray) from) OR (rays from)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements using dimension (((bioarrays or bioarray) from) or (rays from))*.