Perhaps you should try some spelling variations:
"support strategic interactions series." » "support strategic directions series.", "support strategic information series.", "support strategic interaction terms.", "support strategic interactions between.", "support strategy interactions series.", "sector strategic interactions series.", "effort strategic interactions series."
"support grant integration theories." » "support grant integration theory.", "support grant integration through.", "support grant integration efforts.", "support migrant integration theories.", "support trade integration theories.", "support grid integration theories."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("support grant integration theories.") or ("support strategic interactions series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support grant integration theories.") OR ("support strategic interactions series.")).
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• Adding a wildcard symbol may retrieve word variants: (("support grant integration theories.") or ("support strategic interactions series."))*.