Perhaps you should try some spelling variations:
"residue research theories" » "residue research theory", "residue research themes", "residue research three", "residues research theories", "residual research theories", "resident research theories"
"residue research topics" » "residues research topics", "residual research topics", "resident research topics"
"rescue research series" » "rescue search series", "resource research series", "tissue research series", "rescue research services", "rescue research studies", "rescue research service"
"disease research series" » "disease research services", "disease research studies", "disease 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 ("disease research series"))) OR ((("residue research theories") OR ("residue research topics")))).
• Removing quotes may allow a broader search: (((( rescue research series ) or ( disease research series ))) or ((( residue research theories ) or ( residue research topics )))).
• Adding a wildcard symbol may retrieve word variants: (((("rescue research series") or ("disease research series"))) or ((("residue research theories") or ("residue research topics"))))*.