Perhaps you should try some spelling variations:
optimal selection » optimal solution (Expand search), animal selection (Expand search), optimal allocation (Expand search)
selection problem » allocation problem (Expand search), selection process (Expand search), location problem (Expand search)
coding pitons » loading pistons (Expand search)
coder python » codigo python (Expand search), compra python (Expand search)
using coding » using coping (Expand search), using coating (Expand search), using cooking (Expand search)

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coder python optimal selection problem ) OR ( using coding pitons python programming ))~".
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