Perhaps you should try some spelling variations:
integration schemes » integration schengen, irrigation schemes, integration regimes
integration volume » integration von
facto integration » factor integration, faculty integration, sector integration
export facto » export sector, export cargo, export data
support grid » support agri, support grant, support group

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

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