Perhaps you should try some spelling variations:
"coder decoding _ arduino programming" » "coder decoding _ arduino programmable" (Expand search), "coder decoding _ radio programming" (Expand search), "coder decoding _ learning programming" (Expand search), "coding decoding _ arduino programming" (Expand search), "coder decoder _ arduino programming" (Expand search), "barcode decoding _ arduino programming" (Expand search)
"python using python python programming" » "python using pythons python programming" (Expand search), "python using piton python programming" (Expand search), "python using pitons python programming" (Expand search), "python usando python python programming" (Expand search), "python coding python python programming" (Expand search), "action using python python programming" (Expand search), "python in 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 decoding _ arduino programming") OR ("python using python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoding _ arduino programming\") OR (\"python using python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoding _ arduino programming ) OR ( python using python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoding _ arduino programming") OR ("python using python python programming"))*.