Perhaps you should try some spelling variations:
"coder coder discourse cognitive radio" » "coder coder discourses cognitive radio" (Expand search), "coder coder discourse cognition radio" (Expand search), "coder coder discursive cognitive radio" (Expand search), "coder code discourse cognitive radio" (Expand search), "coder coded discourse cognitive radio" (Expand search), "coder border discourse cognitive radio" (Expand search), "coder decoder discourse cognitive radio" (Expand search), "code code discourse cognitive radio" (Expand search), "decoder codec discourse cognitive radio" (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 discourse cognitive radio\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder discourse cognitive radio ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder discourse cognitive radio") OR ("api python python python programming"))*.