Perhaps you should try some spelling variations:
gases transfer » based transfer, gas transfer, bayes transfer
transform fft » transform tvdft, transform cote, transform test
mass transfer » cash transfer, basin transfer, mass transport
own leaders » known leaders, born leaders, own leadership
areas own » areas can
guias f » guias de
fft _ » fit _, fat _, dft _
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 own leaders transform fft _ ) OR ( guias f ((gases transfer) OR (mass transfer)) 3 ao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas own leaders transform fft _ ) or ( guias f ((gases transfer) OR (mass transfer)) 3 ao ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas own leaders transform fft _ ) or ( guias f ((gases transfer) OR (mass transfer)) 3 ao ))*.