Perhaps you should try some spelling variations:
transfer schemes » transfer scheme, transfer systems
schemes versus » schemes vss, schools versus, smes versus
a transformed » _ transformed, _ transformer, a transforming
vagues do » vagues de, aguas do, vague de
de a » de sa, der a, e a
do a » do _, do i, dr a

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: (( vague ((de a) OR (de la)) transfer schemes versus ) OR ( vagues do a transformed _ cao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( vague ((de a) OR (de la)) transfer schemes versus ) or ( vagues do a transformed _ cao ))~".
• Adding a wildcard symbol may retrieve word variants: (( vague ((de a) OR (de la)) transfer schemes versus ) or ( vagues do a transformed _ cao ))*.