Perhaps you should try some spelling variations:
"coder coder anode routing problem" » "coder coder node routing problem" (Expand search), "coder coder and routing problem" (Expand search), "coder coder aodv routing problem" (Expand search), "coder decoder anode routing problem" (Expand search), "code code anode routing problem" (Expand search), "decoder codec anode routing problem" (Expand search), "coder powder anode routing problem" (Expand search), "coder copper anodes 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)

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 anode routing problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder anode routing problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder anode routing problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder anode routing problem") OR ("api python python python programming"))*.