Perhaps you should try some spelling variations:
"supply south integration theories." » "supply south integration theory.", "supply south integration through.", "supply south integration efforts.", "supply through integration theories.", "supply social integration theories.", "supply sector integration theories.", "supply growth integration theories.", "supply costs integration theories.", "supply cost integration theories."
"supply how integrating policies." » "supply how international policies.", "supply how integrating countries.", "supply how immigration policies.", "supply now integrating policies.", "supply shadow integrating policies.", "supply _ integrating policies.", "supply shock integrating policies."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply south integration theories.") or ("supply how integrating policies."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply south integration theories.") OR ("supply how integrating policies."))*.
• Removing quotes may allow a broader search: (( supply south integration theories. ) or ( supply how integrating policies. ))*.