Perhaps you should try some spelling variations:
"coder coupling in linear programming" » "mode coupling in linear programming" (Expand search), "model coupling in linear programming" (Expand search), "core coupling in linear programming" (Expand search), "coder coupling non linear programming" (Expand search), "coder coupling in line programming" (Expand search), "coder coupling in nonlinear programming" (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 coupling in linear programming") OR ("manim python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coupling in linear programming\") OR (\"manim python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coupling in linear programming ) OR ( manim python python python programming ))*.