Perhaps you should try some spelling variations:
"comparative management studies study" » "compensation management studies study", "comparative management series study", "comparative management study study", "comparative management services study"
"competitive procurement basic history" » "competitive procurement case history", "competitive procurement best history", "competitive procurement baseline history", "competitive procurement basics history", "competitive procurement baltic history", "competitive procurement asia history"

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 studies study") or ("competitive procurement basic history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management studies study") OR ("competitive procurement basic history")).
• Removing quotes may allow a broader search: (( comparative management studies study ) or ( competitive procurement basic history )).
• Adding a wildcard symbol may retrieve word variants: (("comparative management studies study") or ("competitive procurement basic history"))*.