Perhaps you should try some spelling variations:
world transformed » world transforming
data transfer » cash transfer
transformed a » transformed _, transformed 1, transformer 1
luis de » luis e
f world » 1 world, 4 world, 2 world
file a » file _, file 1, file 2
a acao » a adocao

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: (( luis de ((data transfer) OR (heat transfer)) file a ) OR ( luis f world transformed a acao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( luis de ((data transfer) OR (heat transfer)) file a ) or ( luis f world transformed a acao ))~".
• Adding a wildcard symbol may retrieve word variants: (( luis de ((data transfer) OR (heat transfer)) file a ) or ( luis f world transformed a acao ))*.