Perhaps you should try some spelling variations:
"coder coder using maxcut problem" » "coder coder using layout problem" (Expand search), "coder coder using about problem" (Expand search), "coder coder using cut problem" (Expand search), "coder coder using maxent problem" (Expand search), "coder coder using maximum problem" (Expand search), "coder coder using macro problem" (Expand search), "coder decoder using maxcut problem" (Expand search), "code code using maxcut problem" (Expand search), "decoder codec using maxcut problem" (Expand search), "coder coders using maxcut problem" (Expand search), "coder cover using maxcut problem" (Expand search), "coder code using maxcut problem" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 coder using maxcut problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using maxcut problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder using maxcut problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder using maxcut problem") OR ("on python python python programming"))*.