Perhaps you should try some spelling variations:
layered transform » lamperti transform, wavelet transform, leaders transform
mass transport » gas transport, mass transit, bus transport
two layered » two layer
transport 3 » transport _, transport a, transport 4
areas two » areas co
guias de » guia de, guide de, aguas de
de mass » de masse, de mais, de masa
set a » get a
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 two layered transform ((set a) OR (set _)) ) OR ( guias de mass transport 3 ao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas two layered transform ((set a) OR (set _)) ) or ( guias de mass transport 3 ao ))~".
• Adding a wildcard symbol may retrieve word variants: (( areas two layered transform ((set a) OR (set _)) ) or ( guias de mass transport 3 ao ))*.