Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements patterns » requirement patterns, requirements water, requirements chapter
patterns dimensional » parameters dimensional, patterns definitional, casting dimensional
array paving » array planning, array imaging, array probing
array arcing » array forming, array probing, array sharing

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 patterns dimensional ((array paving) or (array arcing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements patterns dimensional ((array paving) OR (array arcing)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements patterns dimensional ((array paving) or (array arcing))*.