Perhaps you should try some spelling variations:
"supply data integration theories." » "supply data integration theorems.", "supply data integrationstheorie 2.", "supply data integration theory.", "supply data integrity theories."
"supply spatial integration theories." » "supply spatial integration theorems.", "supply spatial integrationstheorie 2.", "supply spatial integration theory.", "supply social integration theories.", "supply vertical integration theories.", "supply national integration theories.", "supply partial integration theories."

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