Perhaps you should try some spelling variations:
irrigation requirements » irrigation equipment, nutrition requirements
requirements sur » requirements sam, requirements sme, requirements asia
sur dimensioning » smart dimensioning, users dimensioning, _ dimensioning
problems space » problem spaces, problems state, problems impact
problems fixed » problems faced, problems five, problems fluid

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 sur dimensioning ((problems space) or (problems fixed))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements sur dimensioning ((problems space) OR (problems fixed)).
• Adding a wildcard symbol may retrieve word variants: irrigation requirements sur dimensioning ((problems space) or (problems fixed))*.