Perhaps you should try some spelling variations:
"coder code stm32f4 microcontrollers programming" » "coder code stm32f4 microcontroller programming" (Expand search), "coder code esp32 microcontrollers programming" (Expand search), "coder code st microcontrollers programming" (Expand search), "code code stm32f4 microcontrollers programming" (Expand search), "modern code stm32f4 microcontrollers programming" (Expand search), "color code stm32f4 microcontrollers programming" (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 code stm32f4 microcontrollers programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code stm32f4 microcontrollers programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder code stm32f4 microcontrollers programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder code stm32f4 microcontrollers programming") OR ("api python python python programming"))*.