Perhaps you should try some spelling variations:
"tissue research summaries" » "tissue research summary", "tissue research libraries", "issues research summaries", "disease research summaries"
"pressure research series" » "present research series", "pressure release series", "pressure research services", "pressure research studies", "pressure research seminars"
"rescue research theories" » "rescue research theory", "rescue research themes", "rescue research topics", "rescue search theories", "issue research theories", "response research theories"
"resource research theories" » "resource research theory", "resource research themes", "resource research topics", "resources research theories", "resource search theories", "source research theories"
"residue research service" » "residues research service", "residual research service", "resident research service", "residue search service", "residue research overview", "residue research section"

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: (((((("tissue research summaries") OR ("pressure research series"))) OR ((("rescue research theories") OR ("resource research theories"))))) OR ("residue research service")).
• Removing quotes may allow a broader search: (((((( tissue research summaries ) or ( pressure research series ))) or ((( rescue research theories ) or ( resource research theories ))))) or ( residue research service )).
• Adding a wildcard symbol may retrieve word variants: (((((("tissue research summaries") or ("pressure research series"))) or ((("rescue research theories") or ("resource research theories"))))) or ("residue research service"))*.