Perhaps you should try some spelling variations:
counting python » counting method (Expand search), counting methods (Expand search), counting without (Expand search)
complex control » complete control (Expand search), complex central (Expand search), complexity control (Expand search)
using counting » using accounting (Expand search), using cutting (Expand search), using coupling (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
tree complex » treat complex (Expand search), are complex (Expand search), large complex (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.

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