Perhaps you should try some spelling variations:
competitive requirements » competence requirements, composition requirements, competitive procurement
comparative management » compensation management
requirements peace » requirements race, requirements case, requirements part
practices theory » practice theory, practical theory, practices theories
peace history » place history, preface history, space 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 theory ) or ( competitive requirements peace history ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( comparative management practices theory ) OR ( competitive requirements peace history )).
• Adding a wildcard symbol may retrieve word variants: (( comparative management practices theory ) or ( competitive requirements peace history ))*.