Perhaps you should try some spelling variations:
research procurement » resource procurement, research measurement, research requirements
research document » research documents, research comment, research arguments
online band » online brand, online bin, online handel

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

• If you are trying to use Boolean operators, they must be ALL CAPS: online band ((((research document) OR (research procurement))) OR (search document)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "online band ((((research document) OR (research procurement))) or (search document))".
• Adding a wildcard symbol may retrieve word variants: online band ((((research document) OR (research procurement))) or (search document))*.