Perhaps you should try some spelling variations:
"rescue research overviews" » "rescue research overview", "rescue research interviews", "rescue research reviews", "residue research overviews", "resource research overviews", "issue research overviews"
"pressure research series" » "present research series", "pressure release series", "pressure research services", "pressure research theories", "pressure research studies"
"rescue research service" » "rescue search service", "rescue research overview", "rescue research section", "residue research service", "resource research service", "issue research service"
"tissue research series" » "issues research series", "disease research series", "tissue research services", "tissue research theories", "tissue research studies"
"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: (((((("tissue research series") OR ("pressure research series"))) OR ("rescue research service"))) OR ((("rescue research overviews") OR ("rescue search services")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"tissue research series\") OR (\"pressure research series\"))) or (\"rescue research service\"))) or (((\"rescue research overviews\") or (\"rescue search services\"))))".
• Removing quotes may allow a broader search: (((((( tissue research series ) OR ( pressure research series ))) or ( rescue research service ))) or ((( rescue research overviews ) or ( rescue search services )))).
• Adding a wildcard symbol may retrieve word variants: (((((("tissue research series") OR ("pressure research series"))) or ("rescue research service"))) or ((("rescue research overviews") or ("rescue search services"))))*.