Perhaps you should try some spelling variations:
"coder grading _ python coding" » "color grading _ python coding" (Expand search), "cancer grading _ python coding" (Expand search), "cover gradient _ python coding" (Expand search), "coder grading _ python codigo" (Expand search), "coder grading _ action coding" (Expand search), "coder grading _ python code" (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 grading _ python coding") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder grading _ python coding\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder grading _ python coding ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder grading _ python coding") OR ("api python python python programming"))*.