Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"supply charges irrigation schemes." » "supply change irrigation schemes.", "supply large irrigation schemes.", "supply charges irrigation scheme.", "supply charges irrigation systems.", "supply chains irrigation schemes.", "supply curves irrigation schemes.", "supply shortages irrigation schemes."

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