Perhaps you should try some spelling variations:
"coder coder use open problems" » "coder coder use on problems" (Expand search), "coder decoder use open problems" (Expand search), "code code use open problems" (Expand search), "decoder codec use open problems" (Expand search), "coder cover use open problems" (Expand search), "coder code use open problems" (Expand search), "coder code reuse open problems" (Expand search), "coder coder tese open problems" (Expand search), "coder coder the open 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 use open problems") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder use open problems\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder use open problems ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder use open problems") OR ("manim python python python programming"))*.