Perhaps you should try some spelling variations:
"coder coder recoding linear programming" » "coder coder removing linear programming" (Expand search), "coder coder encoding linear programming" (Expand search), "coder decoder recoding linear programming" (Expand search), "code code recoding linear programming" (Expand search), "decoder codec recoding linear programming" (Expand search)
"topic and python python programming" » "topic and pythons python programming" (Expand search), "topic and piton python programming" (Expand search), "topic and pitons python programming" (Expand search), "topic in python python programming" (Expand search), "topic on python python programming" (Expand search), "topic api python python programming" (Expand search), "topics and python python programming" (Expand search), "topical and 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 recoding linear programming") OR ("topic and python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder recoding linear programming\") OR (\"topic and python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder recoding linear programming ) OR ( topic and python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder recoding linear programming") OR ("topic and python python programming"))*.