Perhaps you should try some spelling variations:
"managing directory" » "managing director's", "merging directory", "creating directory", "managing directy"
"managing inventory" » "managed inventory", "management inventory", "taking inventory"
"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 inventory"))) OR ("managing directors")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"managing director\") or (((((\"managing directory\") OR (\"managing inventory\"))) or (\"managing directors\"))))".
• Removing quotes may allow a broader search: (( managing director ) or ((((( managing directory ) OR ( managing inventory ))) or ( managing directors )))).
• Adding a wildcard symbol may retrieve word variants: (("managing director") or ((((("managing directory") OR ("managing inventory"))) or ("managing directors"))))*.