Perhaps you should try some spelling variations:
"rescue research theories" » "rescue research theory", "rescue research themes", "rescue research topics", "residue research theories", "rescue search theories", "resource research theories"
"rescue research series" » "residue research series", "rescue search series", "resource research series", "rescue research services", "rescue research studies", "rescue research service"

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: "((\"rescue research series\") OR (\"rescue research theories\"))*".
• Removing quotes may allow a broader search: (( rescue research series ) OR ( rescue research theories ))*.