Perhaps you should try some spelling variations:
"coder coder sampling dirac problem" » "coder under sampling dirac problem" (Expand search), "coder over sampling dirac problem" (Expand search), "coder core sampling dirac problem" (Expand search), "coder coder sampling diagram problem" (Expand search), "coder coder sampling bias problem" (Expand search), "coder coder sampling data problem" (Expand search), "coder coder sampling direct problem" (Expand search), "coder decoder sampling dirac problem" (Expand search), "code code sampling dirac problem" (Expand search), "decoder codec sampling dirac 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 sampling dirac problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling dirac problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder sampling dirac problem ) OR ( api python python python programming ))*.