Perhaps you should try some spelling variations:
"Supply trade integration schemes." » "Supply trade irrigation schemes.", "Supply trade integration some.", "Supply trade integration theories."
"supply _ integration series." » "supply _ integration theories.", "supply _ integrating services.", "supply _ integration social."
supply trade » supply side, supply case

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

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