Perhaps you should try some spelling variations:
"supply chai integration theory." » "supply chai integration through.", "supply chai information theory.", "supply chai innovation theory.", "supply chain integration theory.", "supply iii integration theory.", "supply i integration theory.", "supply chains integration theory.", "supply ch integration theory."
"support social integration theory." » "support social integration through.", "support social information theory.", "support social innovation theory.", "support global integration theory.", "support financial integration theory.", "support regional integration theory.", "supporting social integration theory.", "supply social integration theory."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply chai integration theory.") or ("support social integration theory."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply chai integration theory.") OR ("support social integration theory.")).
• Removing quotes may allow a broader search: (( supply chai integration theory. ) or ( support social integration theory. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chai integration theory.") or ("support social integration theory."))*.