Perhaps you should try some spelling variations:
transform tvdft » transform test
transform fft » transform cote, transform test, transform _
gas transfer » cash transfer, mass transfer, a transfer
transfer 3 » transfer _, transfer 4, transfer a
areas co » areas coal, areas act, areas can
co ideas » core ideas, two ideas, box ideas
guias f » guias de
f gas » _ gas, f das, 2 gas
3 ao » 3 a, 3 co, 3 do

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: (( areas co ideas ((transform fft) OR (transform tvdft)) _ ) OR ( guias f gas transfer 3 ao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas co ideas ((transform fft) OR (transform tvdft)) _ ) or ( guias f gas transfer 3 ao ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas co ideas ((transform fft) OR (transform tvdft)) _ ) or ( guias f gas transfer 3 ao ))*.