Perhaps you should try some spelling variations:
"coder arduino robotica _ programming" » "coder ensino robotica _ programming" (Expand search), "con arduino robotica _ programming" (Expand search), "ide arduino robotica _ programming" (Expand search), "solar arduino robotica _ programming" (Expand search)
"python coding python python programming" » "python codigo python python programming" (Expand search), "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons 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 arduino robotica _ programming\") OR (\"python coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder arduino robotica _ programming ) OR ( python coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder arduino robotica _ programming") OR ("python coding python python programming"))*.