Perhaps you should try some spelling variations:
"and optimization python python programming" » "and optimization method python programming" (Expand search), "and optimization option python programming" (Expand search), "and optimization methods python programming" (Expand search), "and optimization pythons python programming" (Expand search), "and optimization piton python programming" (Expand search), "and optimization pitons python programming" (Expand search)
"coder position encoding decoding program" » "coder positional encoding decoding program" (Expand search), "coder population encoding decoding program" (Expand search), "coder position regarding decoding program" (Expand search), "coder position reading decoding program" (Expand search), "coder position encoding welcoming program" (Expand search), "coder position encoding deworming program" (Expand search), "coder position encoding feeding program" (Expand search), "code position encoding decoding program" (Expand search), "coda position encoding decoding program" (Expand search), "order position encoding decoding program" (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 position encoding decoding program\") OR (\"and optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder position encoding decoding program ) OR ( and optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder position encoding decoding program") OR ("and optimization python python programming"))*.