Perhaps you should try some spelling variations:
"coder code _ microcontroller arduino" » "coder code _ microcontrolador arduino" (Expand search), "code code _ microcontroller arduino" (Expand search), "modern code _ microcontroller arduino" (Expand search), "color code _ microcontroller arduino" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in python 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 code _ microcontroller arduino") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code _ microcontroller arduino\") OR (\"via python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder code _ microcontroller arduino ) OR ( via python python python programming ))*.