Perhaps you should try some spelling variations:
"supply chain integration theories." » "supply chain integration theory.", "supply chain integration through.", "supply chain integration efforts.", "supply trade integration theories.", "supply data integration theories.", "supply grid integration theories."
"supply side integrating services." » "supply side integrated services.", "supply side testing services.", "supply side integrating policies.", "supply shadow integrating services.", "supply china integrating services.", "supply water integrating services."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply chain integration theories.") OR ("supply side integrating services."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply chain integration theories.\") OR (\"supply side integrating services.\"))".
• Removing quotes may allow a broader search: (( supply chain integration theories. ) OR ( supply side integrating services. )).
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration theories.") OR ("supply side integrating services."))*.