Perhaps you should try some spelling variations:
"cadth optimal use report" » "path optimal use report", "width optimal use report", "health optimal use report", "cadth optimal time report", "cadth optimal use reports", "cadth optimal user report", "cadth optimal lse report"
"CADTH optimal timer port" » "CADTH optimal timber port", "CADTH optimal time port", "CADTH optimal timed port", "CADTH optimal time report", "CADTH optimal river port", "CADTH optimal time sport"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("CADTH optimal timer port") OR ("cadth optimal use report")).
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