Perhaps you should try some spelling variations:
irrigation equipment » purification equipment, irrigation development, application equipment
equipment first » equipment fast, equipment digest, equipment bins
first decision » first division, first revision, first session
based openmp » based open, nested openmp, tasks openmp
based opengl » based open
based openg » based open

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

• Performing a fuzzy search may retrieve terms with similar spellings: irrigation equipment first decision ((based openg) or (((based openmp) or (based opengl))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation equipment first decision ((based openg) OR (((based openmp) OR (based opengl)))).
• Adding a wildcard symbol may retrieve word variants: irrigation equipment first decision ((based openg) or (((based openmp) or (based opengl))))*.