Perhaps you should try some spelling variations:
"coder coder improving concurrent program" » "coder coder proving concurrent program" (Expand search), "coder coder improving current program" (Expand search), "coder coder improving content program" (Expand search), "coder coder improving concurrent programs" (Expand search), "coder coder improving concurrent programming" (Expand search), "coder codegen improving concurrent program" (Expand search), "coder conquer improving concurrent program" (Expand search), "coder models improving concurrent program" (Expand search), "coder decoder improving concurrent program" (Expand search), "code code improving concurrent program" (Expand search), "decoder codec improving concurrent program" (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)

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 improving concurrent program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder improving concurrent program\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder improving concurrent program ) OR ( api python python python programming ))*.