Perhaps you should try some spelling variations:
"coder coder on triangle problem" » "coder coder on triangle problems" (Expand search), "coder coder on range problem" (Expand search), "coder coder on change problem" (Expand search), "coder decoder on triangle problem" (Expand search), "code code on triangle problem" (Expand search), "decoder codec on triangle problem" (Expand search), "coder coder of triangle problem" (Expand search), "coder coder of triangles problem" (Expand search), "coder coder _ triangle problem" (Expand search), "coder code on triangle problem" (Expand search), "coder codes on triangle problem" (Expand search), "coder powder on triangle 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)

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 on triangle problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder on triangle problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder on triangle problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder on triangle problem") OR ("api python python python programming"))*.