Perhaps you should try some spelling variations:
"resource research series" » "resources research series", "resource search series", "source research series", "resource research services", "resource research theories", "resource research studies"
"rescue search theories" » "rescue research theories", "rescue earth theories", "rescue search theory"
"rescue sar theories" » "rescue saser theories", "rescue datr theories", "rescue pair theories", "rescue a theories"

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 search theories") OR ("rescue sar theories")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"resource research series\") or (((\"rescue search theories\") OR (\"rescue sar theories\"))))".
• Removing quotes may allow a broader search: (( resource research series ) or ((( rescue search theories ) OR ( rescue sar theories )))).
• Adding a wildcard symbol may retrieve word variants: (("resource research series") or ((("rescue search theories") OR ("rescue sar theories"))))*.