Perhaps you should try some spelling variations:
"coder coder _ starter problem" » "coder coder _ start problem" (Expand search), "coder coder _ state problem" (Expand search), "coder coder _ water problem" (Expand search), "coder decoder _ starter problem" (Expand search), "code code _ starter problem" (Expand search), "decoder codec _ starter 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 _ starter problem") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ starter problem\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ starter problem ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ starter problem") OR ("manim python python python programming"))*.