Perhaps you should try some spelling variations:
a transformed » _ transformed, _ transformer, a transforming
transformed 1 » transformed _, transformer 1, transformed a
den transfer » gene transfer, heat transfer, data transfer
scheme based » schema based, school based, home based
scheme saye » scheme share, scheme shared
1 macao » _ macao, 1 macro, 2.1 macao
agua y » agua 2, agua _
y den » _ den, y de, i den
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 den transfer ((scheme saye) OR (scheme based)) ) OR ( agua e a transformed 1 macao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agua y den transfer ((scheme saye) OR (scheme based)) ) or ( agua e a transformed 1 macao ))~".
• Adding a wildcard symbol may retrieve word variants: (( agua y den transfer ((scheme saye) OR (scheme based)) ) or ( agua e a transformed 1 macao ))*.