Perhaps you should try some spelling variations:
"coder decoder routing linear programming" » "coder decoder using linear programming" (Expand search), "coder decoder commuting linear programming" (Expand search), "coder decoder producing linear programming" (Expand search), "coder decoder treating linear programming" (Expand search), "encoder decoder routing linear programming" (Expand search)
"and python python python programming" » "and pythons python python programming" (Expand search), "and piton python python programming" (Expand search), "and pitons python python programming" (Expand search), "in python python python programming" (Expand search), "on python python python programming" (Expand search), "api python 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 decoder routing linear programming") OR ("and python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder routing linear programming\") OR (\"and python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder decoder routing linear programming ) OR ( and python python python programming ))*.