Perhaps you should try some spelling variations:
conflicting requirements » containing requirements, communicating requirements, cooling requirements
conjunctive management » comparative management
management pictures » management features, management figures, management structures
pictures history » prices history
requirements ets » requirements etsi, requirements ein, requirements case
ets history » its history, texts history, meets history

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