Perhaps you should try some spelling variations:
"coder _ efficient coding problems" » "coder _ efficient routing problems" (Expand search), "coder _ efficient cement problems" (Expand search), "coder _ efficient loading problems" (Expand search), "coder _ efficient counting problems" (Expand search), "coder _ efficient covering problems" (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 _ efficient coding problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ efficient coding problems\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder _ efficient coding problems ) OR ( api python python python programming ))*.