Perhaps you should try some spelling variations:
comparative management » compensation management
procurement reference » procurement references, procurement experience, procurement evidence
management river » management drivers, management five, management lever
reference theory » references theory, preference theory, references theorem
river history » live history, lives history, over 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 river history ) or ( competitive procurement reference theory ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( comparative management river history ) OR ( competitive procurement reference theory )).
• Adding a wildcard symbol may retrieve word variants: (( comparative management river history ) or ( competitive procurement reference theory ))*.