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