Perhaps you should try some spelling variations:
"coder precoder testing linear programming" » "coder peer testing linear programming" (Expand search), "coder precoder design linear programming" (Expand search), "coder primer testing linear programming" (Expand search), "coder decoder testing linear programming" (Expand search), "coder precoder treating linear programming" (Expand search), "coder precoder teaching linear programming" (Expand search), "coder precoder testing linkage programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search), "manim 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 testing linear programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder testing linear programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder testing linear programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder testing linear programming") OR ("api python python python programming"))*.