Perhaps you should try some spelling variations:
integration schemes » irrigation schemes, integration some, integration theories
facto integration » factor integration, faculty integration, sector integration
support drip » support deep, support grid, support during
supply facto » supply factors, supply sector, supply data
systems. » system.

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• Performing a fuzzy search may retrieve terms with similar spellings: (( support drip irrigation systems. ) or ( supply facto integration schemes. ))~.
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