Perhaps you should try some spelling variations:
"coder coder based packing problems" » "coder coder based packing problem" (Expand search), "coder coder based solving problems" (Expand search), "coder coder based parking problems" (Expand search), "coder coder based packaging problems" (Expand search), "coder coder based tracking problems" (Expand search), "coder decoder based packing problems" (Expand search), "code code based packing problems" (Expand search), "decoder codec based packing problems" (Expand search), "coder code based packing problems" (Expand search), "coder foder based packing problems" (Expand search), "coder codec based packing problems" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder based packing problems") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder based packing problems\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder based packing problems ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder based packing problems") OR ("manim python python python programming"))*.