Perhaps you should try some spelling variations:
irrigation equipments » irrigation equipment, irrigation requirements, irrigation requirement
equipments based » equipment based, requirements based, equipments valued
array profiling » array processing, microarray profiling
based excision » base excision, based exclusion, based decision
array arcing » array forming, array probing, array sharing
array string » array strong, arrays strings, array sharing

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

• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation equipments based excision ((((array arcing) OR (array string))) OR (array profiling))~.
• Adding a wildcard symbol may retrieve word variants: irrigation equipments based excision ((((array arcing) or (array string))) or (array profiling))*.