Perhaps you should try some spelling variations:
"coder coder long external problem" » "coder coder long external problems" (Expand search), "coder coder long internal problems" (Expand search), "coder coder long extremal problem" (Expand search), "coder coder dog external problem" (Expand search), "coder coder ring external problem" (Expand search), "coder coder long maternal problem" (Expand search), "coder decoder long external problem" (Expand search), "code code long external problem" (Expand search), "decoder codec long external problem" (Expand search), "coder under long external problem" (Expand search), "coder over long external problem" (Expand search), "coder lower long external problem" (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 long external problem") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder long external problem\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder long external problem ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder long external problem") OR ("manim python python python programming"))*.