Perhaps you should try some spelling variations:
transfer system » transfer systems, transport system, transit system
des transfers » net transfers, cash transfers, arms transfers
data transfer » cash transfer, heat transfer
system can » systems can, system change
code des » code de
ai recht » a recht, i recht, das recht
aa recht » a recht, das recht, agb recht
aguas de » aguas del, aguas do, vagues de
de data » e data, wide data, de datos

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: (( aguas code des transfers ((ai recht) OR (aa recht)) ) OR ( aguas de data transfer system can ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aguas code des transfers ((ai recht) OR (aa recht)) ) or ( aguas de data transfer system can ))~".
• Adding a wildcard symbol may retrieve word variants: (( aguas code des transfers ((ai recht) OR (aa recht)) ) or ( aguas de data transfer system can ))*.