Perhaps you should try some spelling variations:
"rescue research studies" » "rescue research study", "rescue search studies", "resource research studies", "tissue research studies"
"residue research series" » "residues research series", "residual research series", "resident research series", "residue research services", "residue research theories", "residue research service"
"rescue research series" » "rescue search series", "resource research series", "tissue research series", "rescue research services", "rescue research theories", "rescue research service"
"issues research series" » "issues research services", "issues research theories", "issues research service"

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