Perhaps you should try some spelling variations:
"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)
"coder coder using dfu protocol" » "coder coder using du protocole" (Expand search), "coder coder using situ protocol" (Expand search), "coder coder using aflp protocol" (Expand search), "coder decoder using dfu protocol" (Expand search), "code code using dfu protocol" (Expand search), "decoder codec using dfu protocol" (Expand search), "coder coders using dfu protocol" (Expand search), "coder cover using dfu protocol" (Expand search), "coder code using dfu protocol" (Expand search), "coder coder using dft protocol" (Expand search), "coder coder using dfa protocol" (Expand search), "coder coder using dea protocol" (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 coder using dfu protocol\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder using dfu protocol ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder using dfu protocol") OR ("api python python python programming"))*.