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