Perhaps you should try some spelling variations:
"coder coder number routing problem" » "coder coder number routine problem" (Expand search), "coder coder numbers counting problem" (Expand search), "coder coder number writing problem" (Expand search), "coder cover number routing problem" (Expand search), "coder codes numbers routing problem" (Expand search), "coder over number routing problem" (Expand search), "coder decoder number routing problem" (Expand search), "code code number routing problem" (Expand search), "decoder codec number 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 number routing problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder number routing problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder number routing problem") OR ("api python python python programming"))*.