Perhaps you should try some spelling variations:
"rescue research theories" » "rescue research theory", "rescue research three", "rescue research trajectories", "rescue search theories", "resource research theories", "tissue research theories"
"residue research series" » "residues research series", "residual research series", "resident research series", "residue research services", "residue research studies", "residue research service"
"rescue research series" » "rescue search series", "resource research series", "tissue research series", "rescue research services", "rescue research studies", "rescue research service"
"rescue research themes" » "rescue search themes", "resource research themes", "tissue research themes", "rescue research trends", "rescue research theory"
"rescue research topics" » "rescue search topics", "resource research topics", "tissue research topics"

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