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