Perhaps you should try some spelling variations:
irrigation equipment » purification equipment, irrigation development, application equipment
array profiling » array processing, microarray profiling
array sharing » arrays bearing, array imaging, way sharing
array string » array strong, arrays strings, array forming
equipment a » equipment _

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "irrigation equipment a revision ((((array sharing) OR (array string))) OR (array profiling))~".
• Adding a wildcard symbol may retrieve word variants: irrigation equipment a revision ((((array sharing) OR (array string))) OR (array profiling))*.