Perhaps you should try some spelling variations:
"managing directory" » "managing director's", "merging directory", "managing inventory", "managing directy"
"managing direction" » "managing disruption", "changing direction", "managing infection"
"managing directors" » "managing director's", "managing defects", "managing distractions", "managing directs"
"managing director" » "managing direct"

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: (((("managing director") OR ("managing directory"))) OR ((("managing direction") OR ("managing directors")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"managing director\") or (\"managing directory\"))) or (((\"managing direction\") OR (\"managing directors\"))))".
• Removing quotes may allow a broader search: (((( managing director ) or ( managing directory ))) or ((( managing direction ) OR ( managing directors )))).
• Adding a wildcard symbol may retrieve word variants: (((("managing director") or ("managing directory"))) or ((("managing direction") OR ("managing directors"))))*.