Perhaps you should try some spelling variations:
"coder using arduino c programming" » "coder using arduino _ programming" (Expand search), "coder using arduino cone programming" (Expand search), "coder using arduino and programming" (Expand search), "coders using arduino c programming" (Expand search), "cover using arduino c programming" (Expand search), "code using arduino c programming" (Expand search), "coder using arduino 6 programming" (Expand search), "coder using arduino y programming" (Expand search)
"python codigo python python programming" » "python coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigo pythons python programming" (Expand search), "python codigo piton python programming" (Expand search), "python codigo pitons 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 using arduino c programming") OR ("python codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder using arduino c programming\") OR (\"python codigo python python programming\"))".
• Removing quotes may allow a broader search: (( coder using arduino c programming ) OR ( python codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder using arduino c programming") OR ("python codigo python python programming"))*.