Perhaps you should try some spelling variations:
"coder coding diffuse _ programming" » "coder using diffuse _ programming" (Expand search), "coder coding different _ programming" (Expand search), "modern coding diffuse _ programming" (Expand search), "color coding diffuse _ programming" (Expand search), "odor coding diffuse _ programming" (Expand search)
"pi with python python programming" » "pi with pythons python programming" (Expand search), "pi with piton python programming" (Expand search), "pi with pitons python programming" (Expand search), "pci with python python programming" (Expand search), "ii with python python programming" (Expand search), "i with python python programming" (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 coding diffuse _ programming\") OR (\"pi with python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding diffuse _ programming ) OR ( pi with python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding diffuse _ programming") OR ("pi with python python programming"))*.