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