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 coding java signal processing" » "modern coding java signal processing" (Expand search), "color coding java signal processing" (Expand search), "odor coding java signal processing" (Expand search), "coder codigo java signal processing" (Expand search), "coder coding av1 signal processing" (Expand search), "coder coding data signal processing" (Expand search), "coder coding aba 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 coding java signal processing") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding java signal processing\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding java signal processing ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding java signal processing") OR ("api python python python programming"))*.