Perhaps you should try some spelling variations:
"critical" » "criticsl"
"critica" » "critics"
"criticala" » "criticsla", "criticaland", "critically", "criticalto"
"criticalsa" » "criticslsa", "critically", "criticas", "criticalto"
"criticsa" » "critics", "criticita", "criticise"
"criticsm" » "criticsim", "critics", "criticam"

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: ("critical" OR (("critica" OR "criticala") OR (("criticsa" OR ("criticsm" OR "criticism")) OR "criticalsa"))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(\"critical\" or ((\"critica\" or \"criticala\") or ((\"criticsa\" or (\"criticsm\" OR \"criticism\")) or \"criticalsa\")))".
• Removing quotes may allow a broader search: ( critical or (( critica or criticala ) or (( criticsa or ( criticsm OR criticism )) or criticalsa ))).
• Adding a wildcard symbol may retrieve word variants: ("critical" or (("critica" or "criticala") or (("criticsa" or ("criticsm" OR "criticism")) or "criticalsa")))*.