Perhaps you should try some spelling variations:
"coder precoder node selection problem" » "coder precoder node allocation problem" (Expand search), "coder precoder node selection process" (Expand search), "coder precoder node location problem" (Expand search), "coder decoder node selection problem" (Expand search), "coder precoder mode selection problem" (Expand search), "coder precoder wide selection problem" (Expand search), "coder precoder node detection 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 precoder node selection problem") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder node selection problem\") OR (\"manim python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder node selection problem ) OR ( manim python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder node selection problem") OR ("manim python python python programming"))*.