Perhaps you should try some spelling variations:
"coder coder channel modeling problems" » "coder coder channel modelling problems" (Expand search), "coder coder channel modeling process" (Expand search), "coder coder channel covering problems" (Expand search), "coder coder channel coding problems" (Expand search), "coder coder channel model problems" (Expand search), "coder codes channel modeling problems" (Expand search), "coder adder channel modeling problems" (Expand search), "coder color channel modeling problems" (Expand search), "coder decoder channel modeling problems" (Expand search), "code code channel modeling problems" (Expand search), "decoder codec channel modeling problems" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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 coder channel modeling problems") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder channel modeling problems\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder channel modeling problems ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder channel modeling problems") OR ("in python python python programming"))*.