Perhaps you should try some spelling variations:
integration schemes » integration schengen, irrigation schemes, integration regimes
negro conservation » energy conservation, nature conservation, desert conservation
price integration » service integration, trade integration, price indexation
support negro » support needs, support new, support agri
support price » support process, support policy, export price

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support negro conservation efforts. ) or ( support price integration schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support negro conservation efforts. ) OR ( support price integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (( support negro conservation efforts. ) or ( support price integration schemes. ))*.