Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements from » requirements _, requirements a
from decision » from vision
based opengl » based open
based openmp » based open, tasks openmp
nested » tested

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 from decision ((((based opengl) OR (based openmp))) OR (nested openmp))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "irrigation requirements from decision ((((based opengl) OR (based openmp))) OR (nested openmp))".
• Adding a wildcard symbol may retrieve word variants: irrigation requirements from decision ((((based opengl) OR (based openmp))) OR (nested openmp))*.