Perhaps you should try some spelling variations:
"coder coder complexity persistence diagrams" » "coder coder complexity resistances diagrams" (Expand search), "coder coder complexity experience diagrams" (Expand search), "coder code complexity persistence diagrams" (Expand search), "coder model complexity persistence diagrams" (Expand search), "coder lower complexity persistence diagrams" (Expand search), "coder decoder complexity persistence diagrams" (Expand search), "code code complexity persistence diagrams" (Expand search), "decoder codec complexity persistence diagrams" (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 complexity persistence diagrams") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity persistence diagrams\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity persistence diagrams ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity persistence diagrams") OR ("api python python python programming"))*.