Perhaps you should try some spelling variations:
"coder coder draft routing problem" » "coder coder drone routing problem" (Expand search), "coder coder data routing problem" (Expand search), "coder coder flat routing problem" (Expand search), "coder decoder draft routing problem" (Expand search), "code code draft routing problem" (Expand search), "decoder codec draft routing problem" (Expand search), "coder code draft routing problem" (Expand search), "coder power draft 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 draft routing problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder draft routing problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder draft routing problem") OR ("api python python python programming"))*.