Perhaps you should try some spelling variations:
"coder coder _ discrete problem" » "coder coder _ discente problemas" (Expand search), "coder coder _ discrete public" (Expand search), "coder coder _ discrete painlev" (Expand search), "coder decoder _ discrete problem" (Expand search), "code code _ discrete problem" (Expand search), "decoder codec _ discrete 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 _ discrete problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder _ discrete problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ discrete problem") OR ("api python python python programming"))*.