Perhaps you should try some spelling variations:
"supply continental integration theorems." » "supply content integration theorems.", "supply continental migration theorems.", "supply horizontal integration theorems.", "supply continental integration theories.", "supply continental integration theory.", "supply continental integrationstheorie 2."
"supply trade integration regimes." » "supply trade immigration regimes.", "supply trade international regimes.", "supply trade integration regional.", "supply case integration regimes."

You may be able to get more results by adjusting your search query.

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