Perhaps you should try some spelling variations:
transform tvdft » transform fft, transform test
transfer 3 » transfer _, transfer a, transfer 3.2
transfer 4 » transfer _, transfer a, transfer der
areas two » areas co
guias de » guia de, guide de, aguas de
de mass » de masse, de mais, de masa
lamperti » lampert, lamberti, lampietti

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 two lamperti transform tvdft a ) OR ( guias de mass ((transfer 3) OR (transfer 4)) ao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas two lamperti transform tvdft a ) or ( guias de mass ((transfer 3) OR (transfer 4)) ao ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas two lamperti transform tvdft a ) or ( guias de mass ((transfer 3) OR (transfer 4)) ao ))*.