Perhaps you should try some spelling variations:
"coder decoder _ algorithms complexity" » "coder decoder _ algorithmic complexity" (Expand search), "encoder decoder _ algorithms complexity" (Expand search)
"manim python python python programming" » "manim pythons python python programming" (Expand search), "manim piton python python programming" (Expand search), "manim pitons python python programming" (Expand search), "monty python python python programming" (Expand search), "api 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: "((\"coder decoder _ algorithms complexity\") OR (\"manim python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder decoder _ algorithms complexity ) OR ( manim python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder decoder _ algorithms complexity") OR ("manim python python python programming"))*.