Perhaps you should try some spelling variations:
transform fft » transform tvdft, transform cote, transform test
transfer 3 » transfer _, transfer 4, transfer a
areas two » areas co
de based » dge based, de base, code based
de bases » de base, de gases, les bases
fft _ » fit _, fat _, dft _
3 ao » 3 a, 3 co, 3 do
lamperti » lampert, lamberti, lampietti

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( areas two lamperti transform fft _ ) or ( guias ((de based) OR (de bases)) transfer 3 ao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( areas two lamperti transform fft _ ) OR ( guias ((de based) OR (de bases)) transfer 3 ao ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( areas two lamperti transform fft _ ) or ( guias ((de based) OR (de bases)) transfer 3 ao ))*".