Perhaps you should try some spelling variations:
"comparative management par history" » "compensation management par history", "comparative management part history", "comparative management plan history", "comparative management paul history", "comparative management war history", "comparative management paris history", "comparative management party history"
"competitive procurement reference theory" » "competitive procurement references theory", "competitive procurement experience theory", "competitive procurement evidence theory", "competitive procurement preference theory", "competitive procurement references theorem"

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 par history") or ("competitive procurement reference theory"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management par history") OR ("competitive procurement reference theory"))*.
• Removing quotes may allow a broader search: (( comparative management par history ) or ( competitive procurement reference theory ))*.