Perhaps you should try some spelling variations:
"parallel programming python python programming" » "parallel programming method python programming" (Expand search), "parallel programming action python programming" (Expand search), "parallel programmation python python programming" (Expand search), "parallel programming pythons python programming" (Expand search), "parallel programming piton python programming" (Expand search), "parallel programming pitons python programming" (Expand search)
"coder pollution doi coding program" » "copper pollution doi coding program" (Expand search), "coder solution doi coding program" (Expand search), "bodies pollution doi coding program" (Expand search), "coder pollution doi cloning program" (Expand search), "coder pollution doi loading program" (Expand search), "coder pollution doi cooling programs" (Expand search), "coder pollution going coding program" (Expand search), "coder pollution from coding program" (Expand search), "coder pollution data coding program" (Expand search), "coder pollution doi codi program" (Expand search)

You may be able to get more results by adjusting your search query.

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