Perhaps you should try some spelling variations:
"supply trade integration theories." » "supply trade integration theory.", "supply trade integration through.", "supply trade integration efforts.", "supply side integration theories.", "supply case integration theories."
"supply asean integration series." » "supply asean integrating services.", "supply asean integration schemes.", "supply asean integration social.", "supply asian integration series.", "supply balkan integration series.", "supply urban integration series.", "supply assets integration series.", "supply aspect integration series.", "supply case integration series."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply trade integration theories.") OR ("supply asean integration series."))~.
• Removing quotes may allow a broader search: (( supply trade integration theories. ) or ( supply asean integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply trade integration theories.") or ("supply asean integration series."))*.