Perhaps you should try some spelling variations:
"comparative management practices material" » "compensation management practices material", "comparative management practices materials", "comparative management practices editorial", "comparative management practices matter"
"competitive procurement plan history" » "competitive procurement plans history", "competitive procurement law history", "competitive procurement laws history", "competitive procurement poland history", "competitive procurement plains history", "competitive procurement plants 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 practices material") or ("competitive procurement plan history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("comparative management practices material") OR ("competitive procurement plan history"))*.
• Removing quotes may allow a broader search: (( comparative management practices material ) or ( competitive procurement plan history ))*.