Perhaps you should try some spelling variations:
"coder coding problem challenging problem" » "coder coding problem challenge problem" (Expand search), "coder coding problems challenges problem" (Expand search), "coder coding from challenging problem" (Expand search), "coder coding problem charging problem" (Expand search), "coder coding problem chattering problem" (Expand search), "coder coding problem challenging proposal" (Expand search), "coder coding problems challenging problem" (Expand search), "coder coping problem challenging problem" (Expand search), "coder loading problem challenging problem" (Expand search), "modern coding problem challenging problem" (Expand search), "color coding problem challenging problem" (Expand search), "odor coding problem challenging 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.

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