Perhaps you should try some spelling variations:
"coder coder li teaching problem" » "coder coder li teaching program" (Expand search), "coder coder li teaching profile" (Expand search), "coder coder li teaching programs" (Expand search), "coder decoder li teaching problem" (Expand search), "code code li teaching problem" (Expand search), "decoder codec li teaching problem" (Expand search), "coder coder i teaching problem" (Expand search), "coder coder ii teaching problem" (Expand search), "coder coder bi teaching 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 li teaching problem") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder li teaching problem\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder li teaching problem ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder li teaching problem") OR ("manim python python python programming"))*.