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 service"
"rescue research studies" » "residue research studies", "rescue search studies", "resource research studies"
"rescue research study" » "residue research study", "rescue search study", "resource research study"

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