Perhaps you should try some spelling variations:
"coder coder sampling test problem" » "coder under sampling test problem" (Expand search), "coder over sampling test problem" (Expand search), "coder core sampling test problem" (Expand search), "coder coder sampling tss problem" (Expand search), "coder coder sampling cost problem" (Expand search), "coder coder sampling forest problem" (Expand search), "coder coder sampling test problems" (Expand search), "coder coder sampling set problem" (Expand search), "coder coder sampling debt problem" (Expand search), "coder decoder sampling test problem" (Expand search), "code code sampling test problem" (Expand search), "decoder codec sampling test 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 coder sampling test problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder sampling test problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling test problem") OR ("api python python python programming"))*.