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