Perhaps you should try some spelling variations:
"residues research series" » "residents research series", "resins research series", "resources research series", "residues research services", "residues research theories", "residues research studies"
"rescue research study" » "residue research study", "resource research study", "issue research study", "rescue research step"
"tissue research study" » "issues research study", "pressure research study", "disease research study", "tissue research step"
"rescue search study" » "rescue sar study", "rescue search step"

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