Perhaps you should try some spelling variations:
"coder coder parallel prolog problem" » "coder over parallel prolog problem" (Expand search), "coder adder parallel prolog problem" (Expand search), "coder power parallel prolog problem" (Expand search), "coder coder parallel color problem" (Expand search), "coder coder parallel role problem" (Expand search), "coder coder parallel colon problem" (Expand search), "coder decoder parallel prolog problem" (Expand search), "code code parallel prolog problem" (Expand search), "decoder codec parallel prolog problem" (Expand search)
"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)

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 parallel prolog problem") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder parallel prolog problem\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder parallel prolog problem ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder parallel prolog problem") OR ("in python python python programming"))*.