Perhaps you should try some spelling variations:
conjunctive management » comparative management
holding requirements » holding requirement, lending requirements, lending requirement
requirements basic » requirements based, requirements case, requirements etsi
basic history » basics history, baltic history, asia history
systems some » systems saber, systems set

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 systems some ) or ( holding requirements basic history ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( conjunctive management systems some ) OR ( holding requirements basic history )).
• Adding a wildcard symbol may retrieve word variants: (( conjunctive management systems some ) or ( holding requirements basic history ))*.