Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements data » requirements a, requirements case, requirements based
data citation » data situation, data curation, data creation
citation from » citations from, excitation from, creation from
from river » from liver, from rice

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 data citation from river~.
• Adding a wildcard symbol may retrieve word variants: irrigation requirements data citation from river*.