Perhaps you should try some spelling variations:
"coder coding string routing problem" » "coder coding sharing routing problem" (Expand search), "coder coding sectoring routing problem" (Expand search), "coder coding nursing routing problem" (Expand search), "coder coding using routing problem" (Expand search), "coder sewing string routing problem" (Expand search), "coder comparing string routing problem" (Expand search), "modern coding string routing problem" (Expand search), "color coding string routing problem" (Expand search), "odor coding string 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.

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