Perhaps you should try some spelling variations:
integration schemes » irrigation schemes, integration some, integration theories
"supply _ integration series." » "supply _ integration theories.", "supply _ integrating services.", "supply _ integration social."
support group » support from, support grant
supply grid » supply crowd, support grid

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

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