Perhaps you should try some spelling variations:
"comparative management sciences history" » "compensation management sciences history", "comparative management science history", "comparative management evidences history", "comparative management scientist history", "comparative management societies history", "comparative management prices history"
"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 sciences history") or ("competitive procurement basic history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management sciences history") OR ("competitive procurement basic history")).
• Removing quotes may allow a broader search: (( comparative management sciences history ) or ( competitive procurement basic history )).
• Adding a wildcard symbol may retrieve word variants: (("comparative management sciences history") or ("competitive procurement basic history"))*.