Perhaps you should try some spelling variations:
"coder _ microcontroller arduino programmable" » "coder _ microcontrolador arduino programmable" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ microcontroller arduino programmable\") OR (\"via python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder _ microcontroller arduino programmable ) OR ( via python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder _ microcontroller arduino programmable") OR ("via python python python programming"))*.