Perhaps you should try some spelling variations:
"CADTH rapid response supporting: summary with critical appraisal" » "CADTH rapid responses supporting: summary with critical appraisal", "CADTH rapid response support: summary with critical appraisal", "CADTH rapid response reporting: summary with critical appraisal"
"cadth rapid response report: summary with critical appraisal" » "cadth rapid responses report: summary with critical appraisal", "cadth rapid response depot: summary with critical appraisal", "cadth rapid response reporting: summary with critical appraisal", "health rapid response report: 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 report: summary with critical appraisal") OR ("CADTH rapid response supporting: summary with critical appraisal")).
• Removing quotes may allow a broader search: (( cadth rapid response report: summary with critical appraisal ) or ( CADTH rapid response supporting: summary with critical appraisal )).
• Adding a wildcard symbol may retrieve word variants: (("cadth rapid response report: summary with critical appraisal") or ("CADTH rapid response supporting: summary with critical appraisal"))*.