Perhaps you should try some spelling variations:
transforms lives » transforming lives, transformes les, transforms other
den transfer » gene transfer, heat transfer, data transfer
de gases » de bases, _ gases, de gaer
f gases » _ gases
lives a » lives _
luis a » luis f, luis c
a den » _ den, a der, a des

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( luis a den transfer _ acao ) or ( guia ((de gases) OR (f gases)) transforms lives a ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( luis a den transfer _ acao ) OR ( guia ((de gases) OR (f gases)) transforms lives a )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis a den transfer _ acao ) or ( guia ((de gases) OR (f gases)) transforms lives a ))".
• Adding a wildcard symbol may retrieve word variants: (( luis a den transfer _ acao ) or ( guia ((de gases) OR (f gases)) transforms lives a ))*.