Perhaps you should try some spelling variations:
"encoder decoder _ algorithms complexity" » "encoder decoder _ algorithmic complexity" (Expand search), "encoded decoder _ algorithms complexity" (Expand search), "encodes decoder _ algorithms complexity" (Expand search), "encode decoder _ algorithms complexity" (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"encoder decoder _ algorithms complexity\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( encoder decoder _ algorithms complexity ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("encoder decoder _ algorithms complexity") OR ("api python python python programming"))*.