Perhaps you should try some spelling variations:
"competitive requirements case history" » "competence requirements case history", "composition requirements case history", "competitive procurement case history", "competitive requirements based history", "competitive requirements core history", "competitive requirements race history", "competitive requirements trade history", "competitive requirements state history", "competitive requirements life history"
"comparative management practices editorial" » "compensation management practices editorial", "comparative management practice editorial", "comparative management practices historical", "comparative management practices material"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"comparative management practices editorial\") OR (\"competitive requirements case history\"))~".
• Removing quotes may allow a broader search: (( comparative management practices editorial ) OR ( competitive requirements case history ))~.
• Adding a wildcard symbol may retrieve word variants: (("comparative management practices editorial") OR ("competitive requirements case history"))*.