Perhaps you should try some spelling variations:
extraction method » extraction methods (Expand search)
power functions » power function (Expand search), motor functions (Expand search), taper functions (Expand search)
face extraction » frame extraction (Expand search), free extraction (Expand search), rice extraction (Expand search)
functions face » functions are (Expand search), functions case (Expand search), functions spaces (Expand search)
usando codigos » usando jogos (Expand search), usando conceitos (Expand search)
codigos python » codigo python (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( power functions face extraction method ) OR ( usando codigos python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( power functions face extraction method ) OR ( usando codigos python python programming ))*.