Perhaps you should try some spelling variations:
"supply factors integration theorems." » "supply factors integration theories.", "supply factors integration theory.", "supply factors integrationstheorie 2.", "supply factor integration theorems.", "supply facto integration theorems.", "supply sector integration theorems.", "supply functions integration theorems."
"supply chain integration regimes." » "supply chain immigration regimes.", "supply chain international regimes.", "supply chain integration regional."

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chain integration regimes.") OR ("supply factors integration theorems."))~.
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