Perhaps you should try some spelling variations:
layered transform » lamperti transform, wavelet transform, leaders transform
maria transfer » material transfer, partial transfer, africa transfer
two layered » two layer
transfer 4 » transfer _, transfer 3, transfer a
areas two » areas co
guias de » guia de, guide de, aguas de
atd a » aid a, ahd a, ltd a
add a » add _
4 ao » 4 aoi, 4 a, 4 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 two layered transform ((atd a) OR (add a)) ) OR ( guias de maria transfer 4 ao ))~.
• Adding a wildcard symbol may retrieve word variants: (( areas two layered transform ((atd a) or (add a)) ) or ( guias de maria transfer 4 ao ))*.