Perhaps you should try some spelling variations:
transform signals » transform signal, transformation als, transform ideas
cas transfers » cash transfers, cash transfer's, cash transfer
efl legendre » _ legendre, bei legendre
transfers 2 » transfers _, transfers 3, transfers 6
guias de » guia de, guide de, aguas de
2 cash » _ cash, 2 case, a cash
grass » gross, glass

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: (( grass efl legendre transform signals _ ) OR ( guias de cas transfers 2 cash ))~.
• Adding a wildcard symbol may retrieve word variants: (( grass efl legendre transform signals _ ) or ( guias de cas transfers 2 cash ))*.