Perhaps you should try some spelling variations:
subsampling python » subsampling ratio (Expand search)
component context » componente conexa (Expand search), component center (Expand search), component cone (Expand search)
context program » contexto programa (Expand search), contents program (Expand search), contract program (Expand search)
and subsampling » and sampling (Expand search), using subsampling (Expand search), and oversampling (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder tree » modern tree (Expand search), under tree (Expand search), poder tres (Expand search)

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: (( coder tree component context program ) OR ( AND subsampling python python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coder tree component context program ) OR ( and subsampling python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder tree component context program ) OR ( and subsampling python python programming ))*.