Perhaps you should try some spelling variations:
"coder coder on concurrent programming" » "coder coder on constraint programming" (Expand search), "coder coder non concurrent programming" (Expand search), "coder coder of concurrent programming" (Expand search), "coder coder in concurrent programming" (Expand search), "coder decoder on concurrent programming" (Expand search), "code code on concurrent programming" (Expand search), "decoder codec on concurrent programming" (Expand search), "coder code on concurrent programming" (Expand search), "coder codes on concurrent programming" (Expand search), "coder powder on concurrent 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), "manim 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 coder on concurrent programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder on concurrent programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder on concurrent programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder on concurrent programming") OR ("api python python python programming"))*.