Perhaps you should try some spelling variations:
transfer schemes » transfer scheme, transfer systems
schemes prior » schemes pro, schemes fair
transformed a » transformed _, transformed 1, transformer 1
der transfer » der transfers, den transfer, peer transfer
agua y » agua e, agua 2, agua _
a acao » a adocao
y der » _ der, 2 der, 3 der
e a » et 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: (( agua y der transfer schemes prior ) OR ( agua ((et al) OR (e a)) transformed a acao ))~.
• Adding a wildcard symbol may retrieve word variants: (( agua y der transfer schemes prior ) or ( agua ((et al) or (e a)) transformed a acao ))*.