Perhaps you should try some spelling variations:
"coder using arduino microcontroller arduino" » "coder using arduino microcontrolador arduino" (Expand search), "coders using arduino microcontroller arduino" (Expand search), "cover using arduino microcontroller arduino" (Expand search), "code using arduino microcontroller arduino" (Expand search)
"xapi with python python programming" » "xapi with pythons python programming" (Expand search), "xapi with piton python programming" (Expand search), "xapi with pitons python programming" (Expand search), "xai with python python programming" (Expand search), "pi with python python programming" (Expand search), "ai with 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 using arduino microcontroller arduino") OR ("xapi with python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder using arduino microcontroller arduino\") OR (\"xapi with python python programming\"))".
• Removing quotes may allow a broader search: (( coder using arduino microcontroller arduino ) OR ( xapi with python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder using arduino microcontroller arduino") OR ("xapi with python python programming"))*.