Perhaps you should try some spelling variations:
"communication management references theory" » "compensation management references theory", "community management references theory", "education management references theory", "communication management services theory", "communication management references other", "communication management references history", "communication management references thermal"
"comparative management practices history" » "compensation management practices history", "comparative management practice history", "comparative management prices history", "comparative management practices historical"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("comparative management practices history") or ("communication management references theory"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management practices history") OR ("communication management references theory")).
• Removing quotes may allow a broader search: (( comparative management practices history ) or ( communication management references theory )).
• Adding a wildcard symbol may retrieve word variants: (("comparative management practices history") or ("communication management references theory"))*.