Perhaps you should try some spelling variations:
"coder coder channel routing problem" » "coder coder channel souding problem" (Expand search), "coder coder channel coupling problem" (Expand search), "coder coder channel sounding problem" (Expand search), "coder codes channel routing problem" (Expand search), "coder adder channel routing problem" (Expand search), "coder color channel routing problem" (Expand search), "coder decoder channel routing problem" (Expand search), "code code channel routing problem" (Expand search), "decoder codec channel routing 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 channel routing problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder channel routing problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder channel routing problem") OR ("api python python python programming"))*.