Perhaps you should try some spelling variations:
transfer schemes » transfer scheme, transfer systems
transformed 1 » transformed _, transformer 1, transformed a
den transfer » gene transfer, heat transfer, data transfer
schemes fare » schemes fair, schemes part, schemes carol
1 macao » _ macao, 1 macro, 2.1 macao
et a » et al, et la

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 _ den transfer schemes fare ) OR ( agua ((et a) OR (e a)) transformed 1 macao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agua _ den transfer schemes fare ) or ( agua ((et a) OR (e a)) transformed 1 macao ))~".
• Adding a wildcard symbol may retrieve word variants: (( agua _ den transfer schemes fare ) or ( agua ((et a) OR (e a)) transformed 1 macao ))*.