Perhaps you should try some spelling variations:
cadth optimal » path optimal, width optimal, health optimal
optimal leste » optimal tester, optimal test, optimal tests
leste report » late report, coste report, lee report
optimal lse » optimal lsc, optimal pulse, optimal false
lse report » lee report, false report, pulse report

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( CADTH optimal lse report, 1927-0127 ) OR ( CADTH optimal leste report, 1927-0127 ))".
• Adding a wildcard symbol may retrieve word variants: (( CADTH optimal lse report, 1927-0127 ) OR ( CADTH optimal leste report, 1927-0127 ))*.