Perhaps you should try some spelling variations:
"coder coder tier testing problem" » "coder coder tier nesting problem" (Expand search), "coder coder tier nesting problems" (Expand search), "coder coder tier teaching problem" (Expand search), "coder coder user testing problem" (Expand search), "coder coder peer testing problem" (Expand search), "coder coder matter testing problem" (Expand search), "coder decoder tier testing problem" (Expand search), "code code tier testing problem" (Expand search), "decoder codec tier testing problem" (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 coder tier testing problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder tier testing problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder tier testing problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder tier testing problem") OR ("api python python python programming"))*.