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), "manim python python python programming" (Expand search)
"coder coder yes signal processing" » "coder decoder yes signal processing" (Expand search), "code code yes signal processing" (Expand search), "decoder codec yes signal processing" (Expand search), "coder coder sers signal processing" (Expand search), "coder coder eeg signal processing" (Expand search), "coder coder gps signal processing" (Expand search), "coder code yes signal processing" (Expand search), "coder over yes signal processing" (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 yes signal processing") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder yes signal processing\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder yes signal processing ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder yes signal processing") OR ("api python python python programming"))*.