Perhaps you should try some spelling variations:
"coder coder entropy maximization problem" » "coder coder entropy minimization problem" (Expand search), "coder coder entropy minimization problems" (Expand search), "coder coder entropy optimization problem" (Expand search), "coder order entropy maximization problem" (Expand search), "coder hole entropy maximization problem" (Expand search), "coder body entropy maximization problem" (Expand search), "coder decoder entropy maximization problem" (Expand search), "code code entropy maximization problem" (Expand search), "decoder codec entropy maximization problem" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder entropy maximization problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder entropy maximization problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder entropy maximization problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder entropy maximization problem") OR ("_ python python python programming"))*.