Perhaps you should try some spelling variations:
conjunctive management » comparative management
defining requirements » training requirements, learning requirements, lending requirements
requirements based » requirements basic, requirements case, requirements race
management system » management systems
based history » case history, bad history, basic history
system study » ecosystem study, system studies, system setup

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( conjunctive management system study ) or ( defining requirements based history ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( conjunctive management system study ) OR ( defining requirements based history )).
• Adding a wildcard symbol may retrieve word variants: (( conjunctive management system study ) or ( defining requirements based history ))*.