Perhaps you should try some spelling variations:
"supply side integration theories." » "supply side integration theory.", "supply side integration through.", "supply side integration efforts.", "supply trade integration theories.", "supply asian integration theories.", "supply grid integration theories."
"supply fare integration series." » "supply fare integrating services.", "supply fare integration schemes.", "supply fare integration social.", "supply market integration series.", "supply trade integration series.", "supply data integration series.", "supply farm integration series.", "supply case integration series."

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

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