Perhaps you should try some spelling variations:
material programado » material programavel (Expand search), material xerografado (Expand search), material program (Expand search)
decrease material » decreases maternal (Expand search), decrease bacterial (Expand search), decrease arterial (Expand search)
python couplings » boson couplings (Expand search), phonon coupling (Expand search), meson couplings (Expand search)
couplings lambda » couplings and (Expand search), coupling landau (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease and (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)

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

• Removing quotes may allow a broader search: (( decrease on decrease material programado ) OR ( python couplings lambda python programming ))~.