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 poder _ microcontrollers programming" » "poder poder _ microcontrollers programming" (Expand search), "codesc poder _ microcontrollers programming" (Expand search), "poder power _ microcontrollers 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 poder _ microcontrollers programming\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder poder _ microcontrollers programming ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder poder _ microcontrollers programming") OR ("api python python python programming"))*.