Perhaps you should try some spelling variations:
"rescue research theories" » "rescue research theory", "rescue research themes", "rescue research topics", "rescue search theories", "resource research theories", "tissue research theories"
"residues research series" » "residents research series", "resins research series", "resources research series", "residues research services", "residues research service", "residues research summaries"
"rescue research studies" » "rescue research study", "rescue search studies", "resource research studies", "tissue research studies"
"residue research series" » "residual research series", "resident research series", "resins research series", "residue research services", "residue research service", "residue research summaries"

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 theories") OR ("rescue research studies"))) OR ((("residue research series") OR ("residues research series")))).
• Removing quotes may allow a broader search: (((( rescue research theories ) or ( rescue research studies ))) or ((( residue research series ) or ( residues research series )))).
• Adding a wildcard symbol may retrieve word variants: (((("rescue research theories") or ("rescue research studies"))) or ((("residue research series") or ("residues research series"))))*.