Perhaps you should try some spelling variations:
"CADTH based responses supporting: summary with critical appraisal" » "CADTH based response supporting: summary with critical appraisal", "CADTH based responses porting: summary with critical appraisal", "CADTH based responses sorting: summary with critical appraisal", "CADTH evoked responses supporting: summary with critical appraisal"
"CADTH based responses reporting: summary with critical appraisal" » "CADTH based responses porting: summary with critical appraisal", "CADTH based responses responding: summary with critical appraisal", "CADTH based responses regarding: summary with critical appraisal", "CADTH evoked responses reporting: summary with critical appraisal"
"cadth rapid response reporting: summary with critical appraisal" » "cadth rapid responsible reporting: summary with critical appraisal", "cadth rapid response supporting: summary with critical appraisal", "cadth rapid response resulting: summary with critical appraisal", "health rapid response reporting: summary with critical appraisal"
"cadth based response reporting: summary with critical appraisal" » "cadth based responsible reporting: summary with critical appraisal", "cadth based response supporting: summary with critical appraisal", "cadth based response resulting: summary with critical appraisal", "path based response reporting: summary with critical appraisal", "faith based response reporting: summary with critical appraisal", "cad based response reporting: summary with critical appraisal"

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: (("cadth rapid response reporting: summary with critical appraisal") OR ((((("CADTH based responses reporting: summary with critical appraisal") OR ("CADTH based responses supporting: summary with critical appraisal"))) OR ("cadth based response reporting: summary with critical appraisal")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cadth rapid response reporting: summary with critical appraisal\") or (((((\"CADTH based responses reporting: summary with critical appraisal\") OR (\"CADTH based responses supporting: summary with critical appraisal\"))) or (\"cadth based response reporting: summary with critical appraisal\"))))".
• Removing quotes may allow a broader search: (( cadth rapid response reporting: summary with critical appraisal ) or ((((( CADTH based responses reporting: summary with critical appraisal ) OR ( CADTH based responses supporting: summary with critical appraisal ))) or ( cadth based response reporting: summary with critical appraisal )))).
• Adding a wildcard symbol may retrieve word variants: (("cadth rapid response reporting: summary with critical appraisal") or ((((("CADTH based responses reporting: summary with critical appraisal") OR ("CADTH based responses supporting: summary with critical appraisal"))) or ("cadth based response reporting: summary with critical appraisal"))))*.