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 plc protocol" » "coder coder using mac protocol" (Expand search), "coder coder using opc protocol" (Expand search), "coder coder using i2c protocol" (Expand search), "coder decoder using plc protocol" (Expand search), "code code using plc protocol" (Expand search), "decoder codec using plc protocol" (Expand search), "coder coders using plc protocol" (Expand search), "coder cover using plc protocol" (Expand search), "coder code using plc protocol" (Expand search), "coder coder using hplc protocol" (Expand search), "coder coder using uplc protocol" (Expand search), "coder coder using fplc protocol" (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 using plc protocol") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using plc protocol\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder using plc protocol ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder using plc protocol") OR ("api python python python programming"))*.