Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
information documents » information documentation, information agents, information requirements
imprecise query » imprecise queries, imprecise future
data imprecise » data imprecision, domain imprecise

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((information documents) or (irrigation requirements)) data imprecise query driven~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((information documents) OR (irrigation requirements)) data imprecise query driven.
• Adding a wildcard symbol may retrieve word variants: ((information documents) or (irrigation requirements)) data imprecise query driven*.