Perhaps you should try some spelling variations:
"monty python python python programming" » "monty pythons python python programming" (Expand search), "monty piton python python programming" (Expand search), "monty pitons python python programming" (Expand search)
"coder coder path routing problem" » "coder coder and routing problem" (Expand search), "coder coder arc routing problem" (Expand search), "coder coder path ranking problem" (Expand search), "coder decoder path routing problem" (Expand search), "code code path routing problem" (Expand search), "decoder codec path routing problem" (Expand search), "coder lower path routing problem" (Expand search), "coder under path routing problem" (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 path routing problem") OR ("monty python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder path routing problem\") OR (\"monty python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder path routing problem ) OR ( monty python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder path routing problem") OR ("monty python python python programming"))*.