Perhaps you should try some spelling variations:
"coder coder studying covering problem" » "coder coder study covering problem" (Expand search), "coder coder studying cooling problem" (Expand search), "coder coder studies covering problem" (Expand search), "coder coder studying routing problem" (Expand search), "coder coder studying loading problem" (Expand search), "coder case studying covering problem" (Expand search), "coder after studying covering problem" (Expand search), "coder notes studying covering problem" (Expand search), "coder decoder studying covering problem" (Expand search), "code code studying covering problem" (Expand search), "decoder codec studying covering 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 studying covering problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder studying covering problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder studying covering problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder studying covering problem") OR ("api python python python programming"))*.