Perhaps you should try some spelling variations:
"supply side integration theories." » "supply side integration theorems.", "supply side integrationstheorie 2.", "supply side integration theory.", "supply die integration theories.", "supply de integration theories.", "supply life integration theories."
"supply ocean conservation efforts." » "supply ocean observation efforts.", "supply local conservation efforts.", "supply area conservation efforts.", "supply chain conservation efforts.", "supply oecd conservation efforts.", "supply chai conservation efforts."

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply side integration theories.") OR ("supply ocean conservation efforts."))~.
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