Perhaps you should try some spelling variations:
"coder coder vocoder planning problem" » "coder coder order planning problem" (Expand search), "coder coder border planning problem" (Expand search), "coder coder power planning problem" (Expand search), "coder coder vocoder planning process" (Expand search), "coder coder decoder planning problem" (Expand search), "coder decoder vocoder planning problem" (Expand search), "code code vocoder planning problem" (Expand search), "decoder codec vocoder planning 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 vocoder planning problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder vocoder planning problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder vocoder planning problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder vocoder planning problem") OR ("api python python python programming"))*.