Perhaps you should try some spelling variations:
"support staff interventions helping." » "support staff interventions having.", "support staff interventions help.", "support staff interventions during.", "support state interventions helping.", "support state intervention helping.", "support sti interventions helping."
"support grid integration series." » "support grid integration theories.", "support grid integrating services.", "support grid integration schemes.", "support trade integration series.", "support _ integration series.", "support data integration series.", "support agri integration series.", "support grant integration series.", "support group integration series."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support grid integration series.\") OR (\"support staff interventions helping.\"))~".
• Removing quotes may allow a broader search: (( support grid integration series. ) OR ( support staff interventions helping. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support grid integration series.") OR ("support staff interventions helping."))*.