Perhaps you should try some spelling variations:
irrigation requirement » irrigation requirements, irrigation equipment, irrigation department
requirement patterns » requirements patterns, frequent patterns, settlement patterns
patterns dimensional » parameters dimensional, patterns definitional, casting dimensional
array arcing » array forming, array probing, array sharing
array along » array paving, array strong
arrays long » arrays ang, arrays load, arrays lens

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

• Performing a fuzzy search may retrieve terms with similar spellings: irrigation requirement patterns dimensional ((((array along) or (arrays long))) or (array arcing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirement patterns dimensional ((((array along) OR (arrays long))) OR (array arcing)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirement patterns dimensional ((((array along) or (arrays long))) or (array arcing))*.