Perhaps you should try some spelling variations:
"resource research series" » "resources research series", "source research series", "resource search series", "resource research theories", "resource research studies", "resource research summaries"
"rescue research services" » "rescue search service", "rescue research overview", "rescue research sources", "rescue search services", "rescue research overviews", "rescue research sections", "residue research services", "tissue research services", "issue research services", "rescue research service", "rescue rehealth services"
"rescue research service" » "rescue search service", "rescue research overview", "rescue research section", "residue research service", "tissue research service", "issue research service"
"rescue search services" » "rescue search service", "rescue health services", "rescue sar services"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("resource research series") OR ((("rescue research services") OR ((("rescue search services") OR ("rescue research service")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"resource research series\") or (((\"rescue research services\") or (((\"rescue search services\") OR (\"rescue research service\"))))))".
• Removing quotes may allow a broader search: (( resource research series ) or ((( rescue research services ) or ((( rescue search services ) OR ( rescue research service )))))).
• Adding a wildcard symbol may retrieve word variants: (("resource research series") or ((("rescue research services") or ((("rescue search services") OR ("rescue research service"))))))*.