Perhaps you should try some spelling variations:
"supply africa integration series." » "supply african integration series.", "supply africa's integration series.", "supply american integration series.", "supply africa integration services.", "supply africa interaction series.", "supply africa integration server."
"supply social integration theory." » "supply global integration theory.", "supply financial integration theory.", "supply regional integration theory.", "supply social integration through.", "supply social information theory.", "supply social innovation theory."

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

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