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 wave signal processing" » "coder decoder wave signal processing" (Expand search), "code code wave signal processing" (Expand search), "decoder codec wave signal processing" (Expand search), "coder coder wave signals processing" (Expand search), "coder coder waves signal processing" (Expand search), "coder coder rate signal processing" (Expand search), "coder coda wave signal processing" (Expand search), "coder order wave signal processing" (Expand search), "coder model wave 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 wave signal processing") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder wave signal processing\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder wave signal processing ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder wave signal processing") OR ("api python python python programming"))*.