Perhaps you should try some spelling variations:
"coder coder _ microcontroller robotics" » "coder coder _ microcontrollers robotics" (Expand search), "coder coder _ microcontroller remote" (Expand search), "coder coder _ microcontroller anomalies" (Expand search), "coder decoder _ microcontroller robotics" (Expand search), "code code _ microcontroller robotics" (Expand search), "decoder codec _ microcontroller robotics" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa 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 coder _ microcontroller robotics") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ microcontroller robotics\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ microcontroller robotics ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ microcontroller robotics") OR ("api python python python programming"))*.